Assuming it's a caddis of some sort. Tied here nominally as a Mother's Day; change color/size to suit your needs.
Here's his vid





hook - Dai Riki 135 #12
thread - MFC 8/0 dark olive
abdomen - dubbing light olive
rib - Mirror Flash opal
wing/wingcase - deer hair
hackle - dun
thorax - dubbing dark olive




Regards,
Scott