Instead of photoshopping the background blurry, maybe lower the aperture next time and bump up that SS! I could tell it was shopped by the tree under the riders rear tire, you missed a spot!
To Yugc, that flash is mostly pointing at the bottom of the rider just to add a little bit of back light to make the rider pop a little more and also fill the part of the jump that's farther away with a little more light. I also liked the way it made a little light burst instead of lens flare or washing out the shot so I left it. I think it adds to the shot but maybe that's just me?
the jumps, the riding, the lighting; everything