Try fishing these patterns as part of a team of two or three flies, use a heavy fly on the point with lighter patterns on the droppers , this way you will cover more depths and hopefully catch more fish.
Hook: Fulling Mill 31165 Super Heavyweight Grub
Sizes: 10-12
Thread: Black
Body: Black Flexi Floss
Rib: Silver Wire Tinsel
Thorax: Black Thread
Wing Case: Pearl Flashabou
Cheeks: Orange Goose Biots
Head: Black Thread
Then Apply 2-3 Coats Of Cellire Clear Varnish On The Body and Thorax Of The Fly