Here are a couple of things I try to check for every cast:
1. Sound/Music on
2. Video staying around 30fps
3. Remembering to shout out to the place from which I obtained the replay.
4. Giving a little bit of information about the players and their teams.
Those are just general things, as far as the actual observing I mainly just try to watch the mini map as much as possible. Also, I am working on making my camera movements smooth. ie using the middle mouse wheel drag/arrow keys.
My dear tlers, if you'd like, please let me know of some other things I can do to improve my casting!
Thank you all!
If you want to check out my youtube channel, it is youtube.com/firexfredtv