I see what you might be going for so please let me give you a tip.

When a shadow is being cast over a surface that isn't entirely flat (like a floor and then a wall), you really need to show the shadow being bent.

The shadow's curvature over the floor looks just fine, but it looks unnatural and too direct against the wall. It needs to be reduced a bit and more vertical so it looks more "natural".

I'm by no means an art expert I just thought this tip might be helpful.