Wind the thread back down the hookshank to a position around 1/3 hookshank length from the eye. This will allow sufficient space to tie in the wings, thorax hackle and eye. Catch in a white cock hackle.
Take two white cock hackle tips and secure to the hookshank. These need to be tied vertical but angled slightly away from each other (V shape). Take the cock Hackle and wind it up to the eye, each turn in front of the previous, pass between the cock hackle tips (wings) if you can when winding. Secure the hackle with thread and trim waste.