[Sniper]

This isnt just an ask Shrapnel games question but I'd appreciate any input from Tim or the other godlike figures:
I have been playing, commenting on and designing wargames/rpgs and the like for years and have one or two ideas that I'd like to try and make reality. Basically, how would I go about starting this process? Is it worth the slog? Can one man do most of it alone?
Thanks guys, I'd rather have a dream killed than start down another road that goes nowhere