Originally Posted by
Lorn
It may be similar to the second tutorial I linked to you, and it's something I've just learned to do as well, especially with my latest drawings/signaturebuttons/userbars. You can do it if you have a fully drawn solidly filled shape of your drawing on any layer - select that layer, right click the panel and click "select pixels", and then select the lasso tool, right click on the selection, and click "select inverse". Then you can choose your coloring layer (with the same pixels from your base layer selected) and erase anything around the subject without disturbing your original drawing. There might be more techniques for it but that's what I like to do.
I could maybe try making a tutorial for that sometime if my explanation was too technical lol, sorry ;w;
Edit: Oh, you can combine that with layer masks to hide or reveal all elements of your selection by filling parts you don't want to see with black on the layer mask layer, too.