Looks quite Halo-esque, nice! :)

 Nice stuff! The preview actually pulled me in because I simply couldn't work out what it was. I expected trees at night or something. Only issue I personally have is that the gaps between the fingers look axtremely webbed (where it's blue) and could do with some AA at the edges, which also applies to the face in the background as it isn't using the darkest grey, so therefore could do with some AA so it doesn't look so jagged. :)

 Pretty interesting concept, but as far as practicality goes it falls very short of being useable.. I really like it from an artistic perspective though..!

While you did maintain the flesh-hole in his ear you didn't include the other piercings that Sonny Moore (Skrillex's real name, former frontman for Screamo/Metalcore band From First To Last) has.

Look at the below image, you'll see that he has two lip-piercings, and the top of his glasses curve upwards at the top, albeit only slighty.

http://blahblahblahscience.com/wp-content/uploads/2011/05/skrillex.jpg

My final Critique is that there is Anti-Aliasing around the edge as though it's for a light background, but on PixelJoint's default gray background this looks odd.

Aside from all that, this piece is very good :)

 So simplistic, and very cute :)

 I can't bring anything new to the table, but like everyone else I'm thoroughly impressed by the perfect Anti-Aliasing and just the amazing use of colour in this whole piece.

 I absolutely love the depth within these ships; the use of colours (Especially the blue reflections from the flames) is truly amazing. 

 This piece is absolutely beautiful! I love the 'cuteness' of the colour pallette and the highlighting used on the bricks of the building.

Very impressive! The perspective looks like it was awkward to work with, and the colour usage is amazing!