Tie in a clump of bucktail at the rear of the shank as the tail, with the short and over-long hairs removed; add a drop of Zap-A-Gap over the wraps and butts.
Optionally tie in flash with the tail.
Tie in Estaz, Cactus Chenille or crystal chenille at the base of the tail, add a little glue, and wrap it forward in tight turns, leaving room at the front for the head.
Tie off and cut the thread, leaving a good thread base for the popper head to grip.
Cut the foam cylinder to about half length, make a centred hole with a dubbing needle or hot bodkin, and widen it with the heated tool.
Wrap prismatic or foil tape around the foam cylinder and trim the excess.
Stick on the eyes.
Slide the head over the hook eye onto the shank; glue it for a permanent fit, or leave it unglued so heads can be swapped.
Other versions
3 more in the app: As tied by tightlinevideo, LIFliesMike, LIFliesMike (2) - bluefish tube Bob's Banger on a circle hook.