This isn't exactly a concept piece for the character's look, but rather the personality. It demonstrates his excitement about finding something that can help him get the badge he so desires. This look will be suitable for the intended audience, and so that is an obvious plus. This 2D design should work well in the 3D environment.
I quite like this concept as it shows what the character is like, although maybe the eye in the magnifying glass is a bit of a strange shape. I used the liquify feature, something that I used in the What If? Metropolis project. A bit more work can be done on that.