Attack, attack, attack. There is so much movement which comes from how you attack a note and release a note. Those two things are starters which you should be using all the time. If things sound stiff, stop snapping them straight to grid or use your attack and release. Think of playing notes as singing. Not every note sounds like a robot, every note sung has movement. Thats because the artist attacks and releases notes differently. Experiment with your MOD wheel and your pitch bend, those will help as well.