you mean like a 3d model trophy or just the image that appears on the gui when u go to select the tournament?
If you want to make the image on the gui, just make a picture and import it using filemaster
If you want to make a 3d model... its harder. You have to use OEdit to model it. The problem is that OEdit is one of the crudest modeling programs ever devised by man. It doesn't support reference pictures, and it doesnt have any smoothing tools like Maya. It is also the only program that can edit .o files
Im trying to figure out a way to turn maya files into .o points files, but its looking more and more impossible by the day.