Hi, I'm a fairly decent fan fiction writer, and a HUGE LoL fan.

I'm currently doing a work that involves some champions as "guardians", but I'd like to branch off and do a full LoL work.
Can anyone help with tips and advice?

I'd like to mention right now that I have an idea of using a sort of "middle man" character of my own creation to possibly take on the possible forms and/or abilities of certain champions. Feel free to shoot it down if it sounds at all weird or unusable. I wouldn't mind the criticism.