This is about as big as I go... hence the investment in a micro jaw.
Nothing original here, just a proven emerger pattern to fish low in the surface film.
Hook: TMC 2488 #22
Thread: Gudegrod 10/0, tan
Shuck: Teal flank barbs
Abdomen: Stripped peacock quill, olive
Thorax: Blend of muskrat underfur (minus guard hair), pine squirrel cheek hair (including guard hair) and a pinch of Fly-rite clear antron chopped fine (say, 1cm...)
Wing: Niche Products Siliconised Polypropylene Yarn, white
Hope you like

Best,
Andy
PS: the new vise just rocks...