Smear a slight amount of super glue from behind the eye to deep into the bend of the hook.
Start the thread behind the eye and wrap into the bend but before you get quite there tie in a 8” long piece of opal tinsel and bring the thread wraps into the bend and back up four head spaces back from the eye, let the bobbin hang.
Wrap the tinsel forward to the four head space spot and tie off and bend it to the rear on top of the hook and make a couple holding wraps.
Tie in two goose biots to either side with the tips facing down to the rear and the convex side out. Make several wraps of thread to cover the biots and the space from the eye to the tie in point of the biots. Fold the tinsel forward and tie off with a few wraps of thread. And cut the remainder free. Fold the biots forward from each side and let them crisscross just behind the eye on the top of the hook. Make several wraps of thread and cut or tear the tips free.
Color the back edge of the biots with the marker and let dry a few seconds.
Apply a slight amount of UV cure to the entire fly from deep in the bend to the thread wraps behind the eye. Add just a bit more to the thorax to build is a bit larger and cure with UV light.
You will thank me for this one.