Good colours and detail in the Chameleon, agree that you have criticised yourself pretty well on your own. You might be able to fix the burned out areas in PS using layers ... though having just had a look, unfortunately some areas really have all the detail gone even if you darken it all down. However it would be quite simple to clone these areas back in in an under layer, and then use a soft low opacity brush to erase the top layer over them and let some detail and colour show through.

... just an idea.

Miles