A few minor changes to the original. After a few casts, it'll probably be more of a hair-winged Muddler than a hare-hackled Stimulator; not that that's a bad thing.
hook ? Maruto 2312 #6
thread - UTC 140 brown
body - medium tinsel opal
hackle - brown (undersize by 1)
underwing - Congo Hair tan
wing - elk hair
head - hare's mask (loop dubbed)
Part 1
mash barb, start thread at 3/4 mark; tie in (folded) hackle by tip, wrap to bend, return to 3/4 mark (try to keep it smooth)
tie in tinsel, wrap to bend and back; tie off/trim
brush body with Sally, wrap hackle forward, stroking fibers back; tie off/trim
tie in CH; trim (even with bend)
clean, stack, measure (tips a bit past underwing) a clump of elk hair; tie in/trim
make thread loop; wax on