I had to try something different with the scratches as they were horrible to touch up. It's a smart object so if you change one it'll change the others aswell (maybe for colour retouching). Set their layer style to multiply might work too. The resolution of the chameleon itself is a bit low, I must admit, but I reckon it's fine for a skin.
https://drive.google.com/open?id=1Zk-m0UPxdbu-DaGl9_wDyGAIjPRJ5Fzo
https://drive.google.com/open?id=1Zk-m0UPxdbu-DaGl9_wDyGAIjPRJ5Fzo