This is a nice composition with many unexpected melodic directions on your vocal -- at times I think it could be a bit more on pitch, spot corrected perhaps, or overdubbed for the occasional flub. As this is such a naked piece, your vocals being ON are even more important than ordinarily would be. It's worth investing in a pitch correction/vocoder or something along those lines if you don't have time to do lots of dubs, and perhaps a singing course. I personally recommend Ken Tamplin (and I am no great singer by any means, I feel you!)
The vocal mix is present at the right levels to be heard, but I am really distracted by the heavy low mids on it, and it sounds nasal. That could be from a common cold, OR from recording up close to the mic where your nose is above or past the diaphragm and as such nasal resonance can't be heard.
Besides that, great piece. I appreciated the lyrical themes, and captain plugins definitely came in clutch. Good work!
Thanks for coming out to NGADM!