Size 12 too small???? I start tying at size 12 and go DOWN from there! I've got scud hooks down to size 22. +2.50 reading glasses help, although the magnifiers that Hookup posted will probably be on my purchasing list in the next few years.
I honestly don't Trout fish that much. I have no idea what's hitting there. That said, do some Zebra Midges in other colors, red, gray, olive, etc. Clousers and other streamers for big fish? Might be a good idea to tie up some foam hoppers in various colors. I prefer a mix of yellow, brown, light green, etc. Maybe some ubiquitous nymph patterns, like PT's, GRHE's, etc.?