Slide a 2.3mm black slotted tungsten bead onto a size 16 jig hook. Add about five wraps of.015 lead-free wire behind the bead, squeeze the end and push it into the bead slot, then lock it with a tiny drop of superglue.
Start beige 18/0 thread behind the wire and wrap a base down the shank to just before the bend.
Align four natural pheasant-tail fibers and tie them in at the bend as a tail about a body-length long; bind the butts forward to the wire and break them off.
Tie in a length of medium copper wire at the wire and bind it down to the tail tie-in point; add a drop of superglue and build a smooth thread taper from bend up to the wire.
Wrap the copper wire forward in touching turns to the thread, leaving about one bare turn of hook behind the bead; tie off and helicopter the wire to break it.
Brush a thin coat of UV resin over the copper body and cure it to lock in segmentation and durability.
Behind the bead, tie in a doubled/folded strand of ice-blue pearl tinsel and a folded strip of brown Swiss straw on top of the shank, pointing rearward, for the thorax cover.
Dub a thorax slightly thicker than the body with the dark peacock/black dubbing mix, stopping right behind the bead.
Pull the Swiss straw forward, then the pearl tinsel over it, to form the wing case; tie both down behind the bead and clip closely.
Whip finish, then coat the wing case and out onto the bead with UV resin and cure.