I really like the blend of Eldar and High Elf parts. For the most, very natural looking. And the Cold Ones weapons platforms are cool. But while the Cold One Jet Bikes are a stretch but passable, I think your Wraithknight conversion has stretched the trope a bit too far. It just looks kinda wonky. Like a Dr Seuss war machine.
[url=http://www.10mfh.com/wp-content/uploads/2011/09/dino_riders.jpg]Though I guess it can't be all bad[/url].