It sounds good to me. Going off of what was already mentioned, I'd add a in multiple recordings for the hook as background vocals. That, along with maybe delays, chrorus, or reverb, would make the track more interesting and add a sense of space for the hook. I might also do a very broad and small cut around the low-mids (maybe somewhere around 300 and a a broad boost in the upper-mids (somewhere between 3-7k). That part might be my own taste though.
After the third hook, the vocal sounds a lot darker (more lower frequencies) than the rest of the vocals. If that wasn't intentional, I'd cut some lower frequencies and turn it's volume up a bit. Lastly, I feel like something could be automated on the vocals when the instrumental drops out around 1:30.