Thanks for the comments. My painting skill is probably a Novice/Intermediate, so I'm content with it for myself; I know I'll never be good or great or tournament-worthy, but I can manage a decent showing, I suppose. My Thousand Sons tend to come out better because it's simpler; just black, blue and gold. Nothing will ever top my own Heldrake.
The sword came from a Gundam accessory kit of all places; and that was the smallest piece on the sprue. The thing was meant for a blade nearly the size of a Titan, if non-eldar Titans ever carried swords. Original plan was a Dreadknight blade, but it was too small to replace the destroyer chainsword. Though on the Magaera's claw where this 'Nemesis sword' is, it looks decent. The missus suggested the current blade offered a splash of color contrast, and I agree.