I've seen this fly in a few books; thought it looked cool, decided to give it a try. Tied here in PMD colors; change to suit your needs.
hook - Dai Riki 320 #16
thread - UTC 70 yellow
tail - hackle fibers light ginger
body - biot PMD
wing - hen hackle tips dun
thorax - Superfine dubbing PMD
hackle - light ginger (oversize by 1)
Part 1
Mash down barb, attach thread, wrap back to point above barb and make a small thread bump
even tips on some hackle fibers, measure for length (shank); tie in tight against the bump to set the angle
tie in moistened biot notch-side down for a ribbed body; wrap forward and tie off
take a pair of hen hackle tips (= to gap width), put them together with the tips curving away from each other, measure for length (entire hook); tie in at 70% mark