Good start. I’d make the wings a bit smaller though and go with a blck, charcoal gray, or olive body for tricos. Poly-propeline yarn in dun or white, as well as the shiny material wedding gowns veils are made from work great for flat spinner wings. Otherwise, tie the wings normal, say in a dun style and trim the bottom flat. I use grizzly colored dun typically for the wings on my tricos.
Seasonally speaking, BWO’s, Dark hendricksons, and caddis are the next of the major dry fly hatches you’ll encounter in the Midwest.
D.A.