The individual chops need work. the whole piece gives one the sense that perhaps scissors were provided and lots of white paste glue. The window is perhaps best illustrating that fact, merely cut and paste with no effort to blend. Really the whole thing resembles perhaps some variant of bad french art.
This entry shows a lot of creative ability, but Dudley is right about the blending and shadows. A good idea is essential but is only the beginning. The finished product has to give justice to the idea.
Hilarious, but I think the composition is too crowded