In my first year of University, we would have to do an artist study every week and I felt like trying it out again! Here are two studies of the same painting "Self Portrait with Beret and Turned-Up Collar". I concentrated on only the face, though in time I would like to do a study of the entire painting.
The First Image was made in Open Canvas:
The second image was made in Photoshop:
Both have very different outcomes!