Nothing to change in the mechanics!
It's peculiar, I've played 10 lying platforms, basically the same idea over and over, yours is pretty different which is a good thing!
The best thing you should improve, in my opinion, is polishing your game more, it depends on the time you can dedicate to it of course, anyway for the next Jam try to make it a bit longer, with more mechanics and maybe dare more with the graphics! :)
The idea was good, keep it up man!