I personally think that this is a very well written Tutorial, and worth being published. Well structured, helpful pictures and good explanation. Good Job S8NSSON!
Actually, I'm probably gonna try that, too, sounds like a very good idea, and I've found better crosshairs in many of the Tactical Shooters that I have played before than in paintball.
Only negative thing to be mentioned about the tutorial: it is limited to photoshop, tho converting it to other programs like paintshop pro or w/e might work, i think the tutorial could be held a little more general or contain another description for another program (like "in Paintshop Pro you would do it this and that way"). That might be a job for someone else, and the result might well be included in the Wiki!