I have to be honest - I love these, and they really make me smile. The designs are nearly perfect, with bright colors that manage to pop while still blending well with each other. Everything feels so bright and positive! The facial expressions are basic yet meaningful; and the scenes being depicted, simple as they are, are chock full of character. Overall the style and color of the art communicate a sense of liveliness that I think works beautifully.
I'm definitely going to save these pics to my G3 brainstorming portfolio. All in all, very well done! I hope to see more artwork in the same vein in the future.