Just wanted to show off my Possessed
CSM Champion that I custom converted yesterday and get some C&C. I used the wings from some old Tyranid Gargoyles, an unidentified Tyranid Arm (I believe it's from a Warrior), and an unidentified arm bit that looks like it's actually a terminator piece.
If you like it, it's currently for sale! Check out the Dakka Swap Shop thread:
http://www.dakkadakka.com/dakkaforum/posts/list/549323.page