I don't mean this in a dick way but do you play 6v6? I noticed you are on a highlander team from your steam profile but I've never seen you around the 6s community at all before these casts. I'm curious because I have never heard of you at all but you seem to have a better grasp on the scene than most actual players or established casters I've watched.
Your casting itself is a bit rough around the edges in places but nothing that wouldn't be expected from someone dipping their feet in for the first time, and overall these have been very solid and enjoyable to watch. I think you should definitely keep it up as with more practice you could rival any of the established casters. I think you're already doing a much better job than some people who get a lot of viewers simply for being known as players. Especially considering you don't have a cocaster to work with and you're doing the camerawork while casting at the same time. Hopefully you'll be able to get on a setup where you can actually stream in real-time at some point.