There's probably not much to comment on at the moment, but I thought I'd start it from the rough scribble.
I put it in here because I tend to lose focus and not complete these things. So perhaps with a few pointers and suggestions I'll get it finished.
Anyway, this big guy(don't have a name for it yet) is a slow moving heavy assault mech. The two primary cannons don't leave much to the imagination, it is also equipped with a secondary central mounted gun. Also other bits and pieces, probably some AA defence.
Also this isn't for anything in particular, just personal.