I have a small picture I am working on for friend, just fun, for a laugh I have a "finished" copy my picture but something is just not quite correct about it,

and I was hoping if somebody have time, you might be able to give me a hint in what I may change about it to improve it

It is not urgent, it does not have to be perfect, it is just silly fun but if you can tell me what looks not so real about it (and there is so much unreal about it, I realise *blush*) I would be much happy!

I think also something to do with background. Does anybody have idea a more suitable background?

Here is my picture

Thank you!
Clara xx