For the most part, I really like it. The lighting is great, and render really pops. Just a couple things though, the text is a bit on the large side. It's kinda taking away from the focal. And the render is awkwardly placed, just a bit.
Also, since the focal appears to be in motion, it might be a good idea to change the border to a solid colour and just have it along the top and bottom of the sig.
But yeah. Overall, great job. :]