Easy-peasy emerger; change colors/sizes to suit your needs.
hook - Mustad 3399A #12
thread - Danville 6/0 brown
abdomen - ostrich herl olive
thorax - ostrich herl grey
antennae - pheasant tail barbs
hackle - partridge
Part 1
mash barb, start thread, wrap to bend
tie in some ostrich, twist around thread, wrap to 3/4 mark, tie off/trim
repeat with grey ostrich
measure (shank x 2) a pair of pheasant tail fibers; tie in/trim