Jess, you amaze me. When and if you make the one with the horns into a t-shirt for class... I'm buying one.
Awesome work -- you should absolutely keep at it and consider just putting some originals on ebay - see what happens! A lot of people make some good money selling original pin-up art (or prints) and from taking private commissions. You have the right stuff to do that, Jess. Great work! :^)