yeah i circled three spots that could be better, and used an unsharp mask filter to make it a little darker and brighter in some areas, without the gray coloring.
1. Maybe just add light texturing or a faint line(like the one at the peak of the jump) to show where it ends and where the background base is.
2. This light should be pushing the shadow in the other direction, towards the jump. Make that part lighten up the corner of the jump where i circled it, and keep the rest of the shadow there from the other light.
3. Make this a little more defined so you can tell what is the jump and what is the base the jump is sitting on.