Start the hot orange 12/0 thread, wind it back to the bend and a little way around it, and build a small orange butt. Whip finish the orange thread off and cut it.
Start the rust 8/0 thread behind the eye and tie in the small copper wire, binding it back to where the orange butt ends so the rib starts just in front of the butt.
Build the body with the rust thread alone. A thread body keeps the fly sitting flush in the film. Stop about half an inch back from the eye to leave room for the head.
Rib forward with 5-6 turns of the copper wire and tie off.
Double a clump of brown Antron or Z-lon over the thread so you get two wings at once, tie it in and wrap back slightly. Trim it to length just past the hook bend, cutting on a 45-degree angle and snipping slowly so the ends splay.
Clean the fluff from a clump of natural elk hair, stack it, and measure it just past the length of the underwing. Tie it in with one loose wrap, a second loose wrap, then tighten down so the elk flares evenly.
Tie in a cree hackle behind the eye, trim the stem, and take 4-5 wraps to form the hackle, then tie off.
Wrap the thread forward over all the material butts and whip finish right behind the eye.
Trim the hackle flat underneath the hook, leave the top and sides alone, so the fly rides low, then lift the surplus elk hair and wrap it into a small neat head to finish.