Lay on a base of coral thread (Danville Flat Waxed) and tie on a small bunch of white calf tail as shown. Cover it with thread as it forms the final body.
Instead of calf tail, some artificial fibres or even dog hair will do.
Tie on a gold dumbell eye (brass or tungsten) making sure it is secure.
It this stage you may want to epoxy the body and eye.
I had a problem with a fish trashing the thread, so this would be a good idea, they have sharp nippers.
Turn the fly over, and tie in some rootbeer calf tail as shown.
I sometimes put some white underneath the rootbeer.
Pink can also be used.
I like to put some thread behind this clump to cock the calftail up a bit, but this is not essential.
Build up a head, whip finish and apply epoxy or liquid fusion.