I was asked recently to post some process stuff to show how I put a painting together. I've actually only photographed my process once, it was for a larger scale packaging illustration I did for Magic in the summer of '08. This was a while ago and I've changed things up a little since then but this is still pretty much how I go about working. Click to enlarge.
1 - value thumbnail, usually I do this in pencil but here it's digital.
2 - color sketch, this is what I submitted to the art director for approval.
3 - final drawing (they're never pretty).
4 - final drawing transferred to masonite over acrylic tone.
5 - acrylic underpainting...I don't really do this anymore.
6 - oils!
7 - everything's in but unrefined.
8 - final painting as I submitted it.