I just watched the first one, it was good. I really like the multiple shot effect you had on the up rail and other rails, if you can keep this in all of your edits then your set. One thing that should be changed is variety. Dont put shots from the same feature over and over, instead mix it up, have a jump shot followed by a rail shot. Less slow motion, i know alot of people think that slow motion can make an edit amazing, although to much of it kills an edit. try to throw in a few more shots at normal speed. lastly everything that matt said above, make sure you lighting is on point so that its more appealing to your viewers. 
Good luck!