COMPOSITION... Not too much I can impart here. The background is not cluttered and effectively looks like part of the anole's natural habitat, though it probably isn't. Most of the anole is sharply in focus.. what's most critical is the eyes - they look a little soft but nothing too serious. The only thing that I would change is including the tail... I don't mind when certain elements are cropped, but in this case it looks like the anole is anchored to the right side of the photo. Cropping off more to the left would probably balance it and eliminate this feeling also. Though you've made green your dominant color, it isn't the kind of shot that would immediately think that color is the most important aspect of the photo. The topic is open to a wide degree of subjectivity though and everyone's got their own ideas as to what fits the challenge and doesn't.
TECHNIQUE...Focus and clarity are good, the only thing I could say is that the light looks slightly harsh (or photo a tad over-sharpened?) just around the feet and belly areas.
OVERALL...depending on an animal's hyperactivity, animal shots can be a difficult thing to get done right, and I like the pose and setup of your cricket-eating machine :) It's definitely is a subject I'd want to go back to and capture again and again :)
I love anoles and I have taken many a picture of them. I think this photo meets the challenge well and overall is a well done picture. You have good composition and use of depth of field here but the picture doesn’t look as sharp as it possibly could be. I would suggest using a fill-flash for pictures like this. It will really bring out the scales and make it look much sharper overall. I know that these guys aren’t usually all that cooperative but it would also be nice to see more of his eye. I think this was a very good effort and I would suggest working on it some more using a fill flash and a shutter speed of at least 1/125 sec. I doubt you could use a tripod for this type of picture and the fast shutter speed makes a world of difference. I gave this picture a 6.