I have been looking at the DVD from Sanden "Painting the head in one sitting 111, Pam", I enjoyed the video but from what he says during the video I beleive that he would do a lot more work on the painting before he would consider it consider it finished for a commisioned client. My question is how do I find out what else he would do?
If you decided that you would like to learn from this artist, you will probably need to do some more work/research. Check if he has any more DVDs, any books, workshops, demos etc. If that doesn't work, I'd suggest writing to him directly.