This large blue creature looks like a cross between a grub and a dragon, with 6 legs and an elongated body that ends in a tail. Its head is pretty small compared to the rest of its body and it has two big black eyes that peer inquisitively. Its mouth is open and reveals lots of sharp teeth. I would suggest a bright blue for the main body of the creature and a dark blue for shadows and some sharp highlights. I think black for the eyes, and maybe a light yellow for the teeth, would really bring the creature to life. Additionally, light gray details or splotches on the wings would be really interesting too. With this color scheme, you'll end up with a beautiful fantasy creature with lots of fun highlights and shadowing.