Pinch the barb on the streamer hook, then wind a length of 0.015" weighting wire covering pretty much the length of the shank.
Start black thread behind the wire, take a few wraps up over it and build a dam in front of it, then run the thread back to the start of the bend.
Stack about twenty bucktail hairs from the centre of the piece and tie them in for the tail — well longer than the hook bend but short of a body length — and carry the butt ends forward in loose wraps to help smooth the gap behind the weight.
Untwist a length of three-strand jute twine and take a single strand, snip the end square for a clean tie-in point, and bind it in just aft of the weight with as many wraps as it takes.
Note which way the strand cords up — this twine is reverse-wound, so spin it counter-clockwise — then wrap the burlap body forward to the front of the hook, tightening the cord every couple of wraps.
Catch the burlap off with two or three tight wraps and snip it, then pick the body out with a toothbrush or bodkin; the recipe calls for well-picked-out burlap, so leave what you get rather than trimming it back.
Lay a few extra thread wraps to give a smooth base wide enough for three or four turns of hackle, snip the stem off the grizzly hen feather and tie it in.
Take four turns of hackle for a big, heavily hackled front, catch the tip off with a couple of wraps, then sweep the fibers back and build the head — on a streamer or steelhead fly do not be afraid to make it big.
Reach in and snip just the hackle stem, whip finish, and pluck out any fiber that will not lay back.