Hi there!
I really like your song. Very soulful touch and nice chops. To give some constructive critique here are couple of thoughts to consider.
1) I felt the drums could escalate quicker. Kinda felt like too much teasing since things start to happen on that department on the half way of the song.
2) The sax could be "tighter". Maybe equalizing and more compression to fix that? Also on that part the stereo image is much more on the left. Feels bit unbalanced at least on headphones. Try pan automating guitars or some other stuff on the right to balance out? Or maybe hard right panned delay or reverb?
3) I would add some spice to the last chorus. Hammond or something that fits this style. :)
Very good job overall.