Memory

I think I noticed some problems.

1) The bends in Dennis's shirt looks kind of odd. It makes his arms seem to be really long.

2) This might just be my opinion, but I think his back leg appears to be larger than the front.

3) I think the girl's head might be leaning too far away from her neck.

4) The gap in the grass on the right doesn't seem to change in diameter, when it should be appear kind of cone-like, starting large, and getting smaller the further away the path gets. And there's something similar with the paw prints, but I don't know if there's a clear way for me to explain it.

I hope this helps...