Mount the streamer hook and start white thread behind the eye. Tie in medium silver bead chain eyes about two eye lengths back with tight figure-eight wraps, then lock them with cross wraps under the shank.
Run the thread back to the bend in a smooth base.
Tie in a black marabou tail about one and a half shank lengths long. Bind the butts forward along the shank and trim so the underbody stays level.
Form a long dubbing loop at the base of the tail and take the thread forward to just behind the eyes.
Lay Woolly Sparkle Dub into the open loop in a sparse, even band with the fibers running across it, mixing the Black'n'Silver and Midnight Purple to taste. Spin the loop into a dubbing brush.
Wrap the brush forward in touching turns, stroking the fibers rearward after every turn so nothing gets trapped, up to the bead chain eyes.
Take a turn or two of the brush around and through the eyes to fill the head area, then tie off and trim the loop.
Sweep all the fibers back, build a small tidy head in front of the eyes, whip finish and cement.