Mount a #8 5X long streamer hook and run a 70 denier thread base all the way back to the bend.
Cut the Silver Mylar tinsel at a slight angle and catch it in silver side toward the hook with as few wraps as possible to keep the underbody flat; add a half hitch.
Wrap the tinsel forward in touching turns, using the rotary if you can and taking care that the first wrap lies smooth. Catch it off well behind the eye with a couple of tight wraps, snip and bury the tip.
Set the thread where the back of the head will be. Take a clump of white bucktail twice as big as you need, pull out any really long or crazy hairs, then grip it by the tips and pull the short hairs out; repeat until it is thinned by half. No stacker.
Measure the white wing about a third of the hook length past the bend, hold it tight and set it with two pinch wraps, then tighter wraps forward keeping it on top. Snip the butts at an angle for a taper.
Take the thread back to the rear of the head and prepare the same amount of red bucktail the same way. Tie it in at the same point with a soft first wrap, since the dyed hair is hollower and wants to flare, tightening as you go forward; add securing wraps before snipping the butts.
If the hair starts creeping around the shank, take the thread to the back of the head, lift all the hair and take one wrap under it, then one wrap around just the hair.
Take the thread to the middle of the head, lay three strands of Peacock herl with the ends even on top as a topping the same length as the bucktail, take a few wraps then several more to secure, and snip.
Smooth everything in, build a good-sized streamer head with a ramp to the eye, and whip finish with four or five turns. Pull the tag perpendicular and slide the scissors in to cut it flush; add head cement (done off camera).
Run the bodkin under the three herl strands, press your thumb on top and pull gently to curve them so they sweep down over the wing; repeat as needed.