I like the tune, it's quite nice! I do notice those audio mixing things you were talking about! The kick drum seems a bit distorted from :31-50, but your mixing from :50 to the minute mark is really good! Whatever you did there, you should apply to the rest of the piece! I notice at 1:01 to 1:20 there are dips in the audio where the kick may go, I'm not too sure how this is happening but I imagine it has to do with a kick you are using at that point. You'll get better as time passes! I remember my first mix, I can't even go back and listen to it LMAO! Keep at it! This is a great starting point for 2020! Cheers friend!