thank you for your comments
Ivanmx , i'm not planning on putting more moss , i would like to keep the wood present , with more moss i think it would look too "green"
i'm trying with a white background but i'm having some difficulties to get good pictures , i'll post some when the result will be satisfying ...
i'm also planning to do some evolutions with plants in the background once this version will be finished , certainly some valisneria , anyways , i'll keep posting