No offence but have you played comp tf2 before? I don't know if this is just a new account you've made, so if it is my bad. My point though is that if you've never played competitively it's unlikely you'll be able to make any accurate insights into plays teams could make. So if all you do is play by play commentary that's cool, but usually that is accompanied by someone that is more analytical of the game eg. Tasteless and Artosis. They're the best example really of the perfect (IMO) casting duo, personally I'd recommend getting someone more experienced in the game to cast with you or just play comp for a bit to get to know the map place names/player names.