But yeah; it's a great image. The design is really cool and the colors are very well done. What's your medium?
One thing I would suggest, though, is to make the male and female a little more similar. Maybe add a few more frills to the female, or take some away from the male. But at the moment the male seems really lizard-y and the female looks like a human with green skin, frilly ears, reptile feet, and a tail.