For me the reddish color on the left looks a little weird and id erase his tie off aswell as that kinda pulls my eye away from the rest of the sig for some reason, but it may just be me. Other than that id maybe move the render to the left a little and have your text up the top right corner in a bit bigger size and maybe a different font.

I know this probably sounds a lot but i think it would improve the look of the sig in my eyes.