Snip off a generous pinch of calf hair, about a hook gap in diameter. Remove the fluff, the size of the pinch will shrink considerably doing this, and place in a stacker to align the tips. Measure the wing so it is about a half a hook shank in length and tie in with a pinch wrap. Calf hair is very slippery so secure with several tight wraps to secure it to the top of the hook shank before you release it to trim the butts. Trim the butts at an angle.