Title screen background is great, but the vector style buttons don't match it too well. Would look more consistent with bitmap buttons with a more rustic look.
The ant character is decent flash-style art.
Those crystals can't decide whether they want to be round or sharp-edged, and they don't have a sense of refraction or transparency.
The interface looks like a default template, you should customize it more to your game. Maybe add a background, stylish fonts, and more bitmap buttons instead of vector gradients.
