Follow these 7 steps to turn hand-drawn artwork into reusable Photoshop brushes you can share with the world.
Before You Start: How Brushes Work
Two core properties govern how Photoshop interprets brush artwork:
Color
Photoshop reads grayscale values when defining a brush:
White areas become fully transparent
Black areas become fully opaque
Gray tones produce varying degrees of translucency
This is important to keep in mind throughout the entire process — every adjustment you make should aim to produce clean blacks on a perfectly white background.
Size
Brushes can be up to 2500 × 2500 pixels (Photoshop 7.0 and later). Always work at the largest practical size — scaling a brush down is fine, but enlarging it beyond its original dimensions will introduce blur. A good rule of thumb is to create every brush at the maximum size you might ever need.
Step 1: Scan Your Artwork
Draw a bold ink stroke on white paper, then scan it at roughly 200 dpi. A clean, high-resolution scan gives you the best starting material.
Tip: Ink on paper is the most common starting point, but it's far from the only option. Charcoal, graphite, dry brushstrokes, watercolor splatters, coffee stains, crumpled paper textures — almost anything with interesting texture can become a great brush. You can also use photographs of natural textures like clouds, foliage, or gravel. The key is strong contrast and an interesting silhouette.
Step 2: Convert to Grayscale
Open the scanned image in Photoshop and switch to 8-bit Grayscale mode:
Image → Mode → Grayscale
This lets Photoshop correctly interpret the tonal range of your artwork. If your scan was done in color, this step also removes any color cast introduced by the scanner.
Step 3: Clean Up with Levels or Threshold
Remove scanning noise and sharpen the contrast using one of these adjustments:
Levels (Image → Adjustments → Levels) — drag the input sliders to push darks darker and lights lighter. This is the more flexible option and preserves soft edges and subtle gradations.
Threshold (Image → Adjustments → Threshold) — converts the image to pure black and white with no gray in between. Use this when you want a hard-edged, graphic brush.
Which one should you choose? If your source material has delicate textures or soft edges (like watercolor), go with Levels. If you're after a bold, solid silhouette (like a stamp or stencil), Threshold works better.
Step 4: Fix the Background
If the background looks grey or slightly off-white, drag the right Input Levels slider toward the left until the background is pure white. Remember — any area that isn't perfectly white will show up as partially visible in your brush, creating an unwanted halo or bounding box around your stroke.
Common mistake: Skipping this step is the number one reason homemade brushes look "dirty." Even a background that appears white to the naked eye may contain values of 250 or 245 instead of a true 255. Always double-check with the eyedropper tool.
Step 5: Remove Unwanted Marks
Got stray ink spots or scanning artifacts? Here's a non-destructive way to clean them up:
Duplicate the stroke layer
Apply your Levels or Threshold adjustment
Add a layer mask
Paint over the unwanted areas with a black brush on the mask
This approach lets you hide imperfections without permanently erasing any part of the original artwork. If you change your mind later, just paint the mask back with white.
Step 6: Fine-Tune the Result
Make any final tweaks to get the stroke looking exactly right. Try these tools:
Levels (Ctrl/Cmd + L) — best for overall tonal balance
Brightness/Contrast — quick and simple adjustments
Exposure — useful for subtle midtone shifts
Curves (Ctrl/Cmd + M) — the most precise control over specific tonal ranges
At this point it's worth zooming in to 100% and scrolling around the canvas to make sure everything looks clean. Pay attention to the edges of your artwork — if there's a thin grey border from the scan, crop it away.
Step 7: Define the Brush
Go to Edit → Define Brush Preset, enter a descriptive name, and click OK.
Your new brush immediately appears at the bottom of the Brush Preset picker — ready to use.
Tweaking Brush Dynamics
Once you've defined a brush, you can dramatically change how it behaves by adjusting Brush Settings (Window → Brush Settings). Here are the most useful options to experiment with:
Spacing — controls the distance between individual stamps as you drag. Lower values create a smooth, continuous stroke; higher values produce a dotted or scattered effect.
Shape Dynamics — adds variation to size, angle, and roundness as you paint. Enable Pen Pressure for size jitter if you use a graphics tablet.
Scattering — randomly spreads brush stamps away from the stroke path. Great for foliage, particles, and organic effects.
Transfer — controls opacity and flow jitter, letting you create strokes that naturally fade in and out.
Even a single ink splatter brush can feel completely different depending on these settings — so take the time to play around.
Exporting and Sharing Your Brushes
Want to package your brushes as a shareable .abr file? Here's how:
Go to Edit → Preset Manager
Choose Brushes from the preset type dropdown
Select the brushes you want to include (hold Ctrl/Cmd to pick multiple)
Click Save Set
Choose a save location and name your .abr file
Tip for organizing large packs: Give each brush a clear, descriptive name before exporting (e.g. "Ink Splatter Large 01", "Dry Brush Thin 03"). It makes the pack much more user-friendly for anyone who downloads it — including future you.
That's it — your custom brush pack is ready to distribute to fellow designers.
Common Mistakes to Avoid
Working too small. If you define a brush at 500 px, it will blur when used at 2500 px. Always start large.
Leaving a non-white background. Even barely-visible grey causes a "dirty box" effect around the brush.
Using a color image. Always convert to Grayscale first — color information is discarded anyway, and leaving it in can produce unexpected results.
Ignoring the edges. Scan artifacts often lurk at the very edges of the canvas. Crop generously.
Not testing the brush. Before exporting, paint a few test strokes on a new canvas at various sizes and opacities to catch any issues early.
Frequently Asked Questions
How do Photoshop brushes work?
Photoshop brushes work by reading grayscale values in your source image. White areas become fully transparent, black areas fully opaque, and gray tones create varying translucency. Brushes support up to 2500 x 2500 pixels. Always work at maximum practical size — scaling down is fine, but enlarging beyond original dimensions introduces blur.
What is the maximum size for a Photoshop brush?
The maximum brush size in Photoshop is 2500 x 2500 pixels (Photoshop 7.0 and later). Always create brushes at the largest size you might need — scaling down preserves quality, but scaling up causes blur.
How do I export my brushes as an .abr file?
Go to Edit > Preset Manager, choose Brushes from the preset type dropdown, select the brushes you want to include (hold Ctrl/Cmd for multiple), click Save Set, choose a save location, and name your .abr file.
What brush settings should I adjust after creating a brush?
The key settings are Spacing (distance between stamps), Shape Dynamics (variation in size, angle, roundness), Scattering (random spread of stamps), and Transfer (opacity and flow jitter). Access them via Window > Brush Settings.
