From a producer-like point of view, I can absolutely hear a second vocal in the intros that's an octave up but with a ton of delay and panned.
Oh, you actually did something similar half-way through. ha. The lower vocal in sometimes hard to hear. Unclear and low in volume. Your louder vocal sounds great. Perhaps the lower part was at the bottom of your range. I would just rerecord them to get better inflections and clarity during the lowest passages.
Do you record several takes and comp them? I didn't watch the video, but I noticed you're filming yourself singing which prob means one take only. The downside of that is that you aren't getting the best possible takes from each line.
edit: the music sounds great. very good mix. i've been a fan of all the tracks you've posted thus far. great songwriting and vision. hope the comments help