Wyvern sculpt

This is something I've been working on for a day now. While I am writing this it is already late. I did few fixes and took few renders of it. Well, I found a color scheme, but it is actually just kinda bland. Not very impressive. Anyway, the thing's done so I'll move on.
Anyway, I decided to name it actually as a wyvern. It is a common practice in the game or movie industry when it comes to dragons, they often just make four limbed monsters and call them dragons. Dragons usually possess 6 limbs. Wings and legs. But a wyvern has 4 limbs, wings and hindlegs. I know it's just easier to go with 4 limbs.