Hi Mate,
Your channel art could definitely use some improvement, along with the thumbnails those would be the first things. At the moment it's not very inviting and doesn't really display any of your personality or really showcase what your channel is about. Maybe create a channel trailer thats under 1 min long introducing yourself.
Your audio quality is very decent, could improve on it buy maybe using a pop filter just cut out some of the words with a harsh P or S.
Your video quality is good, I don't think you need to hyper edit your videos. I think they are good as is, maybe just tighten it up the edits a little bit.
I would suggest also working on a upload schedule not just for a audience so they know when your videos come out but also for yourself to get into the routine of making videos because in the world of YouTube CONSISTENCY IS KING! This is optional but the addition of social media links would be a nice little touch.
Those are just some food for thought, good luck with everything
