It looks great! I'm not sure if you can really have an eyeshadow that's over-blended but as you said, you can definitely have it under-blended. The Rhinestones for the eyebrow piecing are a nice touch. Are you in a photography studio? The lighting is so good.

Have you ever tried blending 2 or 3 colours from inside the eye to out (ie, from your nose ridge towards your ear)? That might be fun to try...