I like the way you've captured the reflection. The frog could be a little sharper, though, and it might be better if the composition were a little more balanced by moving the frog up in the frame.
Theselittle guys are very cool and I hope to be able to photograph one someday. I'm not sure if this image is suffering from digital noise or a lack of focus, bu the image looks to me to be in need of more sharpness. and perhaps some better lighting. JMO.
Hehe, he looks pretty content chillin there :) I think the focus is a little soft though, perhaps USM would help, or just focus from slightly further away next time?
Gorgeous tree frog. He does appear to be chillin'. There are lots of possibilities with such a subject. A more dynamic composition and better focus would improve it.