Biggest criticism about your casting is that you don't really seem to pay attention to what your co-caster is saying and you make sort of sudden changes of topic in what's being explained when casting. Two casters casting should sound like a conversation taking place. You have a tendency to jump to something irrelevant of what the other caster is saying when it's your turn to say something.
I think you do a decent job at play-by-play, but you sometimes seem to run out of words to use because you're hyping a play up so much that you can't think of any bigger adjectives to use. You could fix this by either expanding your vocabulary, or by sticking to simple phrases/not hyping up plays that often, unless of course they're massive plays.
Your interview skills are lacking. Try and maybe jot down questions in between maps in order to have something interesting to ask. Also remember interviews are always fun when you really get the interviewee talking, so ask some interesting questions that can't be answered with a yes/no, which you can then follow up with more questions. A lot of these things come down to just bettering your conversation skills c:
Your radio cast this season was a highlight. I'm excited to see you cast again and see you improve even further at it.