Put the 1/8-inch tungsten bead on the size 12 scud hook, take six or seven turns of.020 lead wire, and slide them up inside the bead to lock it in place; start the olive thread behind it.
Tie in a short tail of iridescent pheasant rump fibers at the bend.
Tie in the midge vinyl rib at the bend, flat side up, and build a slight thread taper along the shank. The thread color shows through the translucent rib, so it sets the body tone.
Wrap the V-rib forward in touching turns for a tapered, segmented body; tie it down very firmly behind the bead.
Tie in a length of extra-fine silver wire and form a dubbing loop with it.
Load the loop with the collar blend (half synthetic peacock, a quarter hare's ear, a quarter UV Ice Dub), spin it, and brush it out.
Wrap a short collar behind the bead and tie off; pick out any overly long fibers.
Whip finish behind the bead and add head cement or resin.