depending on fly size....take a medium to large piece of EZ BODY, corsair or similiar tubing and slide a 2" long piece over the fly shank. Secure at the eye end. fold the tubing back over itself and tie in at first tie point. you can pull and push this folded section to gain the profile you want. tie in material in front of spreader. Can be kinky fiber, yak, fox, goat, feathers etc. you can spread GOOP or CCG on the tubing face. Pull back and seat the materials in to the Goop or CCG. Form a thin transparent veil going backward to form the body. Trim as required. If CCG ....hit it with the UV light. If goop...just let it dry. Secure eyes with goop or CCG.