Tied here as a Green Drake; change colors/size to suit your needs.
hook - Dai Riki 135 #10
thread - UTC 140 olive
core - 20lb mono
tail - moose body hair
abdomen - 1mm foam olive
wing - deer hair dun
collar - 1mm foam
thorax - dubbing olive
hackle - grizzly dyed olive
Part 1
mash barb, start thread; put a loop in the end of a piece of mono and tie in
measure (2x hook length) a clump of moose body hair; tie in/trim butts
adjust hook angle, insert loop in gallows; wrap moose body up (1 hook length) and back down
tie in foam; brush tail with Super Glue, wrap body, tie off/trim