It's quite difficult to make a lot out from the photo, but what I can see I like. That's a very vibrant green, and I like the black/grey shields. The armour is nicely hightlighted too. One bit of advice I'd give is to do something with the toes/claws. I'm sure you would have got to them anyway, but as they are they're too bright white. They kind of draw the eye, and I'm not sure lizard soldiers would have such clean toenails!
Good job though. Post up a few clearer pics if you can, I'd like to get a better look. Quick photography tip - try not to take miniature photos from above.