Fly Tying a Rhyacophila Caddis Larva by Mak

Very effective Pattern for River Material List Hook size 12-10 Curved Nymph Hook ,, Thread Black 8/0 ,, Body Clear Stretch Beading Elastic ,, Breather & Tail is White Ostrich Herl ,, Legs Pheasant Tail Fibre,, I have used a Permanent Black pen Marker for the Head