Cheers everyone, it is going better than I'd hoped for so far.
It really helps seeing so many inspirational projects all in one place - I haven't got Andym's wizardry with plasticard, Silent Invaders skill with green stuff, or JohnnyTodd's mastery of woodcraft, but I hope to pick up a few tips, and improve.

Inspired use of those carcass assembly plug dowel thingies 
Thanks, they are a bit more fiddily to cut than I thought they would be, already had me cursing a few times tonight. If I hadn't have stumbled across them my original thought was beads, but the dowel seems to work ok.
I'm sure your going to be tired of me saying this.....but that's brilliant! 
Coming from you, that is praise indeed - i'll let you know if it gets tiresome
