That render is freaking sweet. As for the signature I like the design. I guess if I had to critique it I'd say there's not enough contrast from the background to the render. Maybe the composition is a bit off too. It's just my style, but I rarely use a full body shot in a signature. Maybe try a little bit closer up? You're more skilled than I so don't take my critiques to heart. Regardless I'd still say it's an amazing signature. I love the text, the background, and the render. Gifted with multiple talents I see.
