Alright I've made up a something I call T3T_IMG (Icon Making Guide, hehehe) and it's very WIPz, but I'll add it to the T3T_MiscItemIcon download page and see if you can't polish it up a bit, I know it may need pictures. But it's a start.
I just sent you a message with some notes on the tutorial that you put up.
...as I mentioned in my message, remember that writing/editing/proofing tutorials is part of what I do professionally. I don't say that to say "I'm all that!", or even to argue that "I really know what I'm talking about, so you'd better listen!"... rather to point out that I'm probably far more detail oriented and critical about tidbits, than is necessarily appropriate for a free modder's tutorial (rather than the tutorials that businesses pay thousands of dollars per year to have access to).