Creating a Custom Brush
Photoshop CS6 Tutorial
How to Build a Custom Shape Brush in Photoshop
You can create brushes in Photoshop with any imaginable shape. To create the shape, start with a white background, then add your black or grayscale image. Once it is converted to a brush, the paint is applied based on the grayscale values. In other words, paint is thickest in the black areas and the light areas apply little or no paint.
In this example we will create a brush using a Custom Shape. You can also create brushes from photographs, textures, scans, brush strokes or text.
Open a new 1,024 pixel x 1,024 pixel document with a white background in Photoshop (File > New).
Click the Custom Shape tool, set the options to Shape, Fill to black, then choose a shape for your brush.
Click-drag while holding the Shift key to add your new shape. The shape should be at least half the size of the document.
Select the Rectangular Marquee tool (m key) and draw a selection that encompasses the shape.
Choose Edit > Define Brush Preset and name your new brush.
Turn off the visibility for the shape layer and add a new blank layer at the top using the Create a New Layer icon in the Layer palette.
With the top layer selected, click the Brush tool (b key) and choose a new Foreground Color.
Choose your new brush by opening the Brush Presets panel (Window > Brush Presets).
In the Brush panel (Window > Brush), click Brush Tip Shape and drag the Spacing slider so you can see the individual shapes. Once you are finished, reset the Spacing back to 25%.
Use the Bracket keys ([ or ]) to decrease the size of the brush.
You can either click or click-drag to add multiple shapes to the document.
Varying the Color
Try selecting Color Dynamics in the Brush panel to add some variation to the shapes. Set the Brightness Jitter to 60%. The new shapes vary in brightness as they are added with the Brush tool.
Custom Brushes work with both the Brush tool and Mixer Brush tool.
Custom Brush Max Size?
Custom brushes can be up to 5,000 pixels by 5,000 pixels.