Well you may be able to use photoshop, your your not that good at it.(no offense) They both need alot of work, the one on the left is way too bright and the anatomy is a bit wierd, and the one on the right is just....weird. Look at alot of Buu pics from all angles, then look at some actual anatomy pics if your going for realism. Its better than some people can do, and im sure you will get better eventually, just keep working at it.