There's no frame of reference (jump/ramp/track) for this one - which I (and many other people) find essential for these types of shots. It's just a guy framed against the sky. Framing against the sky is a good thing but we need more storytelling elements. He could be two inches off the ground in this picture or 10 ft. Show the takeoff/landing and we'll know more about what's going on. This is a problem for many (but not all of your pictures). Here's one where you showed some (but not enough in my opinion) of the landing -
clicky - I find it much better than the one you posted, see if you agree.