Nice
Ok wow I did like this one a lot, because the character just has the funniest face and clean look. I think that you were going for a nice new original character and I like what you've done. The green is nice for a "FROG" and the eyes are the best part of the body with being large and expressive. The eyes really let you feel what the frog is about and draws you in as a focus point. The subtle blue around the inner eye is nice as well, and I think you almost have an anime type eye style here that really works well for the frog. Your use of shadows and shine on the main body is good and makes for a more completed cartoon, but I would have added more shine in the face to give a more slimey feelings as frogs tend to be in the water and wet and slimey. I would have also added some water like background or a lily-pad background to fit it all as a nice scene that you could perhaps use inside of an animation. I think overall this was a nice character and the clean look and style is something I do like when you execute it. I hope you make more of the frog and maybe even the full body and not just the face shot of the lil dude.
~~THINGS TO IMPROVE ON~~
Add more shine to the body of the frog, a nice water type or frog setting background to this would help too, and next time make the entire frog body so we can see the entire character.
~X~