No, don't current that, looks nothing compared to your current imo.
I think that the render is too blended in with the BG, makes it look kinda bad. I can't really see the text either, maybe you can improve on that if you're gonna make any changes.
The second signature, same problem with the text, I can hardly see it. The render is well blended in this time but, I still don't like the coloring of the signature. Sorry mate, not your best work this time! Keep trying :)