Trudes have been around in one form or another for a long time; lots of variations although the basic construction is pretty much the same (tie this one with peacock and it becomes a Western Coachman).
hook - Dai Riki 320 #12
thread - Danville 6/0 black
tag - tinsel gold
tail - Golden pheasant tippets
body - dubbing black
wing - calftail white
hackle - brown
Part 1
Mash down barb, start thread at 60% mark, wrap back to point above barb
tie in tinsel, wrap down bend and back; tie off/trim
even the tips on some GP tippet, measure (shank length); tie in
dub thread, dub tapered body to 60% mark
clean, stack, measure (shank length) a clump of calftail; tie in, trim butts at an angle and cover with thread