Beautiful Princess and the Frog concept art by James Aaron Finch
Hilarious "blind" copy done after studying the image for about 10 seconds and then not being allowed to reference it
Copy while actually getting to reference the image (well as far as I got in an hour. Cursed foliage)
Doing things like this definitely helps the learning process I think (this was an in class assignment so I would hope it was a good learning process! hah.)