Pinch the barb on a size 8 3X-long streamer hook and lay a black thread base down to where the barb was.
Grab the tips of a Lady Amherst tippet feather and cut about 10 or 12 fibers off together so the tips stay aligned. Tie them in at the bend as a modest tail, checking the position, then take a couple of wraps back to set it.
Take the thread all the way forward and tie in gold Brassie wire for the rib, binding it parallel to the shank all the way back to the bend.
Park the thread at the midpoint. Tie in a small to medium clump of green bucktail with the tips pointing forward over the eye, then bind the butts down the shank, holding the bucktail on top of the hook as you go so it does not spin. That is what keeps the body even.
Take the thread almost to the eye. Gather the bucktail, spinning it just slightly, a light twist lays down more material per turn, and wrap it forward as the body to an eye length or two back. Do not pull hard here: if the thread breaks, every fiber unravels.
Take a few smoothing wraps and leave the thread where the back of the head will be.
Counter-wrap the gold rib forward over the bucktail body, about seven or eight turns on a size 8, and take an extra couple of wraps to secure the thick wire before helicoptering it off. Bury any sharp nub with loose wraps.
Wax the thread, measure a clump of blue calf tail about one body length, and tie it in wing-style: one wrap around the hair only, then a wrap around hair and hook, then another, all at medium tension. That first wrap is what keeps the wing on top instead of spinning. Add tighter wraps forward and trim the butts.
Tie in a jungle cock nail on each side as a cheek, fairly long, about the first third of the fly, checking that both sides match. Trim the tips.
Take your time building a clean tapered head, whip finish, and cement. If you skip the jungle cock, tie the calf tail in a little further back, build a bigger head, and paint yellow and black eyes on it.