Well, it is overloaded with c4ds as already mentioned but you kind of got the flow using them and you got an okay lighting as well. Try to add some text and to such a signature maybe a boarder. Tohse white dots there look strange, if you want to do something like that you should rather be using soft brushes for the dots or you create a clipping mask to hard brushes with the full signature and turn it a bit around so that it looks good.
