Hehe! God it makes me squirm each and every time I see Peter Ross... was the very first fly I attempted. I can tell you that yours is infinately better than mine, by virtue of the fact that it's still on the hook!
Not an awful lot wrong with any of those, Zim. Nowt that a little fine-tuning, practice and attention to detail won't sort out.
Same goes for the GP topping tails though, as with your 'bushy bobs'.... a little shorter. Having said that, is there anything in fly tying more delightful than the long, slow, seductive curve of a GP topping? I'd rather have it on the long side, than too short.