Poster Concept

For a project in one of my classes, I need to map an experience I've had. This is a design project so it's basically like a poster. I was thinking of mapping out my progression through ranked play (moving from b3 to s2) and putting little text boxes explaining how I felt or what I thought during each period of time. I need to do this using only my own artwork, I can't use or recreate any of LoLs concepts such as poros, champions, etc.

Currently the poster is quite bland, having only roman numerals, arrows, and text boxes. I don't know what kind of illustration I can put on it or different concept I can use to make my poster look good without using anything LoL specific.

Pleaes help :)