At first I thought... needs more color contrast (subject v. surroundings). I then thought... nice image.. show him in his habitate quite well (duhh). I do have difficulty with the very bright burned out vegitation and back ground. It make it difficult for me to look at and concentrate on the subject. Good luck!
Good photograph! I like the focus on the Iguana. The subject gets lost in all that green color, the reason for camouflage. The over exposed area in the right hand bottom corner somewhat distracting.