With these I had cling film on the scanner, and then paint and Vaseline on my hand. The Vaseline allowed way more movement, and as well produces a weird effect with the prints. Some of the traces of movement from previous prints can be seen on the later prints because of the Vaseline. (For example, there are a load of extra lines on the second and third prints here, because they were taken later)
After seeing the unpredictability of the paint I decided to pare my idea back a bit, and just use markers to draw on my hand. I simplified it further by just drawing straight lines all over my hand. And this simplicity proved to be more successful than I had anticipated... It added another dimension to the images which made them even more interesting.....