Gameplay Commentary Topic Ideas?

Hey guys! I started a YouTue gaming channel recently and I need topics to talk about. I posted two videos for introduction videos, but now I want to do a season with playing Heimerdinger in mid lane, but I have nothing to talk about. I've been playing for about a month so I have basic knowledge of the game and a lot of knowledge with Heimerdinger. He is my best champion especially when playing mid. If you guys could give me ideas that would be great! Please help me out. Thank You!