First one 9/10. I like the colors and the little evil dude looks sweet.
second one 6/10. It looks stretched, like it's to tall or something. Just what I noticed at first. It's good, but looked funny. I liked the first one better.
10/10. Amazing quality, and nice use of colours. I like how the blue matches the guys eyes, and the red in his nose dripping down to his mouth makes a nice effect!