I Want It All Quick Vocal

This is a remake of a song called The Way I are by Timbaland
I made everything except for obviously the vocals. 

Parts That are missing:
Intro - I did attempt this several times but I felt it wasn't Authentic enough for it So I cut it out
Outro Synth and Outro Cymbals - I left this out because I felt it wasn't worth figuring out for like four bars at the end of a song, I figured out some though.
Main Synth - This was such a bitch to know how to do, I still haven't done it properly because I don't have the exact synth Timbaland used plus when I recorded it after I sidechained it to the drums when I toggled the cut off it didn't sound like the original, this was as close as I could get.
Sebastians part isn't in it purely because I couldn't get his acapella. 

Please let me know any mixing techniques I could of used and what I could of done better, I know I have missed out a whole bunch of mixing editing and I would love to know how I can improve myself. This was my first ever attempt in Pro Tools to produce something decent so go easy on criticism :)

kingyshell