Although rarely seen, this is a close approximation to a Wooly Bugger when it hatches. Change color/size to suit your needs. Wierd that I found this on a UK site; didn't think they were in to foam stuff (must be a post-Brexit thing).
hook - Dai Riki 280 #6
thread - Uni 6/0 camel
tail - marabou brown
rib - Krystal Flash pearl
body - Haretron dubbing chocolate brown
wing/head - 2mm foam brown
legs - medium rubber cornsnake
indicator - 2mm foam orange
Part 1
mash barb, start thread, tie in rib, wrap to point above point
measure (shank length) a clump of marabou; tie in/trim butts, cover with thread
dub thread/dub body to 2/3 mark
counterwrap rib; tie off/trim
dub head, finish at 2/3 mark