Easy way.ZayneH said:Man, my soon to be finished efforts look horrible compared to most everybody elses. Mostly due to not knowing how to do the shadow that's inside the avatar. :lol
Make a new layer on top of the layer you are working on and then hold the Alt key between these two layers. The cursor will change and then you click. The new layer will shift to the right slightly. Now whatever you draw on this new layer will only be visible if it is within the boundaries on the layer below that it is connected to.
Hope that helps.