I liked some things, but I didn't like some others
I really liked the hand and face style for the humans. The sparkles and background were nice, but a bit random. The brown sack looked odd, but was quite ok.
The dog's just awful. The eyes are off and the mouth looks unnatural. The right paw is way bigger than the left one and the right ear's lines are thicker than the left one's. The left paw was way bigger than the right one. Maybe it's more to the back, but I really can't see that if it is.
Try looking more into noses, as I'd like to see something different from a triangle.
Please note: Negative isn't necessarily useless.