Thanks for the responses, Yogoda and Sindhi.
I've tried to paint in GIMP before (I use a Bamboo tablet) and, for whatever reason, GIMP seems to react a little slower to my input. If I make a broad stroke with moderate speed, it creates a bunch of straight lines that give the impression of a curve. Maybe GIMP is more of a processor hog than my machine can handle. MyPaint, however, reacts almost perfectly to the input. The only problem is that MyPaint is very limited. I can't move or scale selected parts (or even select an area) or adjust hue/contrast type things. I suppose I need to buck up and use both.

Yogoda, you hit the nail on the head regarding MyPaint when you said, "there are a LOT of tools available, the problem is finding which ones to use". I've tried all the brushes that came with the program and the only ones I feel comfortable with are the charcoal and pencil brushes.

I'm looking into making my own brushes with MyPaint though, which is a bit more complicated than I anticipated.
I do really appreciate both of your responses though. I may give Derek an email on the matter, but I think I've just got to try and fail a bit more with GIMP and MyPaint first. I'll post something soon and maybe all I need is a few pointers from there. I've had some luck with the charcoal brushes and scaling things down 8 times to get rid of the scratchy look of coal strokes. My biggest problem is that I'm a bit of a perfectionist... which is not a good thing to be when I don't have the skill to meet my own demanding expectations.
