Flipping and checking
I create a shortcut in Photoshop so I can quickly flip my image. This enables me to see how my anatomy is developing, or any proportion errors that I need to correct. I also place a Color layer above my art filled with white; when active the art becomes black and white. I check it every now and then to keep track of my values while I’m colouring and painting.
Creating brushes while painting
I keep a white canvas handy for trying out custom brushes. Once I’ve created a brush I adjust its properties in the Natural Brush Media window. In this instance I paint squares that I later manipulate with the Warp tool to make them fit on the belt. I prefer to find a solution to texture or material requirements with brushes, rather then using photos.