Spent Mayfly with Wally wing (dry fly)

Pattern: Spent Mayfly with wally wing. Hook : TMC 947 BL size 12. Thread : White size 8/0 Wing : Grey Mallard. Tail : 3 dear hair fibers. Body : Creme dubbing soft. Rib : Brown Thorax : 3mm black Foam Hackle : Dark grey CDC feather.