First of al the perspective is really off. The dog is supposed to be in the slight birds eye view am i right? But the background doesnt looks like that at all, english isnt my mother tongue its really hard for me to find the right words. Since the background is drawn wrong the dog seems to levitate. The fence is showing in the wrong perspective, its like the normal 2d perspective.
I suggest you to search for some references in the near future, take a pic in the birds eye view and experiment with it by drawing creatures/huma/dogs on this image and see how it works
It's funny how I never have to wait for the weekends anymore with my new school, everyday is kind of like the weekend since I get finished with my schoolwork so early. I just sort of only have to do school for about 10 minutes and then I have the rest of the day to just do whatever XD
Lol sorry if it seems like I'm bragging, I'm sorry.