Cheers Giga, not sure about looking good 

The head's smaller than I wanted it, unfortunately the klaw arm shoulder bracket is seriously limiting the amount of space behind it, I'll try making a head with a longer front tonight and see how that looks - it won't be any problem to change the heads over 'coz I had one of those 'happy accidents' when I was wondering how to attach the head to the upper hull plate. The plastic jar by its' feet is one of a batch I bought for mixing paint in and it's just the right size for a slew bearing, cut a hole in the hull plate big enough to take the neck of the jar, cut the bottom of the jar off, poked it down through the top of the plate, a bit of superglue on the threads of the lid and screwed it on, turns smooth as you like 
Started on the back too and had ages of fun arranging stuff so that nothing jammed on anything else, all seems to work ok now so a couple of exhausts for the turbines, an air intake up at the front of the shoulder, four rokkits, a flamer and a thumb for his klaw, then a bit of finishing off.....then I can start on the other one with a better idea of how not to do it 
Edit - the wire on the bigshootaz is just holding the barrels level - the guns are back-end heavy and will be getting some hydrolix to keep 'em pointing in the right direction 