At this point I'm using GIMP mostly, occasionally jumping over to pixlr (or sometimes even paint XD)
I'm a microbiology grad student, so I haven't had to much time to mess with it. Most of what I have done has been either coloring in some of my sketches (see "sketches" thread, this section) or working on images for a few of my cards . . .
I welcome any feedback on my work, and I'll go ahead and try to find a GIMP tutorial, but it'll probably take me awhile to get through it.
Yeah, I haven't worked on the background at all yet . . .
*edit* Quick question for someone who knows what they're doing with image editing. Is there an easy way to make the background transparent? I always end up having to do that by hand, and it takes forever and looks terrible (I end up with speckles etc)