Heavily Armoured Siege Dreadnought

Hello, this is my first post on B&C and would like some feedback on my most recent conversion (please be gentle!). I apologise for the quality of the shot.

I know that Twin Assault Drills aren't official, but I imagine this dreadnought being wielded against huge walled cities or used in Cities of Death encounters.

It is part of my huge, ever expanding Legion of the Dead Chapter (bit like Legion of the Damned, but less expensive!).

It's based on an Epic Warlord Titan. The head has been replaced with a Skull and I've Milliputed a Rib Cage onto the Torso. All parts of the arms have little magnets in them and are fully moveable.

When I get time to paint it, I plan to use my usual colour scheme of Black with lots of flames painted on the legs and probably around the carapace.

What do you think?