Start the thread on the shank and run it back to the bend.
Peel four fibers from the pheasant tail and bind them in at the bend as tails, two on each side of the shank; snip the butts and spread the pairs apart.
Cut the foam strip in a tapered crescendo shape, narrow at one end. Massage it between your fingers to work some heat in and soften it so it wraps without cracking, then bind the narrow end in at the bend, tightly.
Tie in a grizzly hackle by the stem at the bend, then advance the thread forward to where the body will end.
Wrap the foam forward in touching, not overlapping, turns; the widening strip is what builds the body taper. Tie the foam off at the front of the body and snip the excess.
Palmer the grizzly hackle forward, seating each turn in the groove where two foam turns meet. Tie off and snip the hackle.
Dub a small amount of ice dub ahead of the body as a base for the wings.
Lay the Swiss straw across the shank and figure-8 it in as spent wings, one per side, the way you would seat dumbbell eyes.
Dub more ice dub and figure-8 it through and around the wing base to cover the thread work and bulk up the thorax.
Whip finish. Then pull on each length of Swiss straw to fan the wings out flat.