The shading on the top of the points is a very nice looking feature, and also gives it a feel of depth. Using few colors has payed off remarkably, and the shading compliments it perfectly. The sharp points stand out well, and are very eye catching. Again enhanced by the shading, which exaggerates them, and focuses your attention towards the centre of the piece. Again, the use of simplistic shapes and high detail contributes to the piece immensely, by showing off the best parts and drawing your eyes toward them.
Overall i think this is a very high quality piece.