Thank you! I use Photoshop to color these, and do the lineart, and sometimes to draw, though I find it to be much easier to do my page layouts and sketches on good old paper. A lot of people on here use Paint Tool Sai to do the same thing, and that program is free, just like Gimp. Photoshop is the first one that I figured out, though, so its the one I'm most comfortable with.
I love drawing profiles! And hands! So there will be more! Tehee!