Slide the Brass or tungsten bead to the eye. Take 6-8 wraps of 0.015-0.020" lead wire, break it off and jam the wraps up into the back of the bead.
Start black thread behind the lead, build a small dam against it, take a few wraps over the lead and run the thread back to the start of the bend.
Snip two brown goose biots and flip one so the concave sides face each other and the tips splay. Set one on each side of the shank, slightly toward you, so the first wrap rolls them up on top. Two wraps, check the splay, then a medium wrap to pinch them in. Snip the butts.
Take one wrap of Copper wire around the shank and pull the wire through until its front end sits just behind the lead wraps; bind it back to the base of the tail.
Tie in two strands of Peacock herl at the tail and bind back. Leave the thread about halfway along the body so a broken herl can be caught. Twist the herl in your fingers for a beefier body and wrap forward to a little behind the bead, leaving room for the rib, hackle and wing.
Counter-wrap the Copper wire rib forward in 4-5 turns to lock the herl in, secure with two or three thread wraps and helicopter the wire off. Cover any sharp stub with a few loose wraps.
Tie in the Brown cock hackle and take two to three turns as a collar behind the bead. Catch it off on the underside and snip the stem close.
Take two thin strands of Crystal flash, fold them over twice to make eight strands, and catch them in by their middle with two wraps just behind the bead. Fold the front half back over the top to make sixteen strands, take a couple of wraps back so it lies down over the body, then fill the gap behind the bead with thread.
Trim the Crystal flash wing to about one body length. Whip finish with about four turns behind the bead and trim any hackle fibers pointing forward.
Put a tiny drop of UV resin or head cement on the bead and let it run down over the thread wraps.