Here, “Photoshop CC 2014” installed on “Mac OS X Yosemite” is used.
Photoshop - Brush Tool - Change the shape of the tip (such as a square)
Custom Brush Basic Brush Calligraphy Brush DP Brush Drop Shadow Brush Dry Media Brush Material Brush M Brush Natural Brush 2 Natural Brush Different Size Circle Brush Special Effect Brush Square Brush Heavy Brush Wet Media Brush
