Shaders (shader effects) are hard to critique with still images and even harder when you're not sure about the capabilities of the engine. The only thing I could really tell is that there are highlights on the sharp corners to give a smooth appearance, which is neat, but again, my lack of familiarity with that engine means I don't know if that's anything special.
But you definitely shouldn't have included a diffuse, if that's not what you want feedback on. It just gets in the way of the shader effects you're trying to show, since a lot of would-be shader effects can easily be painted into the texture, and with only still images to reference, we'd never be able to tell.
