I nearly completed my Vader ROTJ costume now (it's 95% finished) when I noticed I'm too small to wear it. So, I'll leave it on my prowse-sized mannequin and get myself a snowtrooper
these were my favourites when I was a kid and I hope I can get all the stuff and building tips here. I was a member of the 501st back in 1999, but my TK suit is long gone.
In case you're interested, that's my Vader (pic about 2 months old, a lot has happened since then):


Alex
