One of the hardest things for me to do is...nothing. I'm not a sitter. I don't idly pass life away doing nothing. As an exercise in "being" (which also means DOING NOTHING) I've been doodling for no particular reason. Just to doodle.
It's great to use a photograph as a "guide print" underneath a piece of glass or acrylic, but expect the printed image to look much more abstract than the photograph.