Mount a size 12 barbless 1X-long nymph hook and lay a band of 0.015 lead-free wraps over the front half of the shank. Start black 70 denier thread behind the wire, snip the tag, and lay a base back to a little past the start of the bend, where the barb would be.
Tie in a good-sized clump of golden pheasant crest fibers for the tail with a couple of catch wraps, then take a few more wraps back around the bend so the tail angles down rather than straight off the shank.
Bind the crest butts forward to the back edge of the lead wraps and trim them off to keep the bulk down.
Tie in brassie-size copper wire and bind it back to the last black thread turn at the tail.
Tie in one strand of peacock herl at the tail and wrap it forward to the front of the lead wraps. The single strand buries the uneven step between the weighted wraps and the abdomen. Snip it off.
Counter-wrap the copper wire forward over the abdomen in open turns, tie it off at the front of the abdomen and helicopter the tag off.
Catch three strands of peacock herl in right at the front of the abdomen, spin them into a fairly tight rope and wrap the thorax just a little thicker than the body. Snip the excess.
Take one of the smaller furnace or coachman brown hen soft hackle feathers, strip back to the notch and tie it in there with the concave side toward the hook so it wraps easily.
Wrap two full turns of hackle with pliers, preening the fibers back as you go. Two wraps give plenty of fibers on a sparse hackle. Zigzag the thread through the fibers and take a couple of wraps behind to secure, then snip the tip out.
Preen the hackle back and lay a short thread base in front for the wing.
Stack a sparse clump of white calf tail fibers, measure the wing about as long as the body, and set it on top with a pinch wrap. Check the position and add a couple more wraps.
Trim the calf tail butts as short as you can, wrap the stubs into the head, then start a wrap right behind the eye, wrap back, and finish with a four or five turn whip finish and head cement.