Mount the long hook, tie in a sparse yellow hackle-fiber tail.
Wrap a smooth black floss body to the 75% mark, wet the floss to keep it flat, and rib with silver tinsel in 5 turns.
Tie in a sparse yellow throat beneath the shank.
Tie in the wing: four white hackles paired concave-to-concave (or a white marabou plume), extending to the tail tip.
Add jungle cock cheeks if you have them. Neat tapered head, several coats of lacquer.
Substitutions
Body instead of Black floss: Black thread wraps (built up) — Simpler, no floss needed; Black dubbing — Slightly more texture
Wing instead of White marabou or hackle: White saddle hackle — Traditional feather wing; White marabou — More movement, modern approach
Cheeks instead of Jungle cock: Stick-on eyes — Much cheaper than jungle cock; Painted eyes — Budget option; Skip them — Fly still fishes fine without cheeks