Right and left arrow keys change the layer (W) and (S) keys change the brightness (A) and (D) keys change the color (Q) and (E) keys change the saturation Scroll wheel changes the size of the brush Space key toggles the erase and the brush Z to undo stroke
Use Turbowarp for better performance: https://turbowarp.org/1045881437 This is broken right now. It's going to be fixed soon. Erase is broken with multiple layers. This will be fixed soon.