180 off box - fluid, but unrealistic because your ankles got stuck in the board. try landing that without ur feet stuck, its more realistic then... 5/10
what the flip - wow, bounced off the stairs. try landing with the board next time though. dont land like you did, land standing. 7/10
what the flip 2 - kinda weird, cause your skateboard bounced off the stairs. extend your left glute when going down so the board flips all the way. 5/10, but has a real potential to become better =D
you spin me right round - nice pop-shoveit. again, try to land standing, you landed on the wheels that time xD. 6/10
all in all, work on landing and fluidity.