Mount a #12 Hends BL 550, wax the copper Nanosilk so it grips, and run a thread base forward; it needn't be neat since the whole shank gets covered.
Catch in the Small Black Vinyl Rib and bind it back to where the body will stop, around the bend, stretching it only gently.
At the same point catch in the Camel Uni-Flexx by its tip, give it a good stretch and bind it down around the corner of the bend, then run open turns of thread forward. Add a one- or two-turn whip finish here so a bumped bobbin can't undo the tie-ins.
Wrap the Uni-Flexx forward toward you, well stretched at the rear and easing off the stretch as you come forward so the body thickens toward the front, leaving a gap between each turn for the rib. Tie off, stretch it hard and cut so it sucks back into the wraps, then check it is tied off well.
Wrap the vinyl rib forward in the same direction, laying it into each gap left in the body. Tie it off firmly and cut.
Re-catch a fresh length of Uni-Flexx, stretch it and bind it back to the rear of the thorax, then bring the thread forward.
Tie in two Hot Orange Goose Biots by their tips, inside of the curve facing out, one on each lower side of the thorax area.
Wrap the Uni-Flexx thorax under good stretch, as thick as you like, then stretch and cut.
Bring both biots forward and up over the thorax, take one loose wrap to position them, then a firm turn to lock; check both sides sit the same, then jiggle the excess back and forth until it breaks off. Whip finish.
Coat with thin UV Resin, thorax first: rotate to build a football shape that protects the biots (a second coat if needed), then spread a thin even coat along the body with a bodkin, turn it so it stays put, and cure.