I'll tuck my soul in corners deep - for Voice and Piano

A short song I wrote in two days. Do you guys have any critique on any "breathing issues" that may arise? Also do you think it ends too abruptly, or is it okay for a short piece? Though it's mostly classical, do tell me if it works in your opinion.

Note: I usually sing my own songs if I can--but this one was way too difficult for my cigarette-smoking, untrained throat to handle XD. So I used an AI-based vocaloid sort of. (Yeah, I kind of feel guilty for using an AI vocaloid, but everything else just sounds so trash, I wanna tear my hair out. Sorry ;_;)