I really like your vocal on this one, it's got a very pleasing quality. What I find interesting is that to my ears there seems to be almost no connection between the vocal melody and the backing musical bed. Like for example there doesn't seem to be any 'change-up' in the backing to follow or lead the vocal into the chorus. This is not a criticism, just an observation. It's a very nice chill track
I've never been a big fan of the hard autotune technique. In general, aside from the aforementioned curious lack of bigger bottom, the arrangement and mix are well done. Some nice production candy inserted. Personally, I'd ditch the autotune. I know it makes it "sound more modern", but I find it merely "gimmicky".