I really like the concept of the game. A platformer where you aren't allowed to jump unless you can guarantee you land safely is already cool, but then add on top the spinning mechanics to influence your jump height. There are, however, a few problems I had while playing:
-There are a lot of blind jumps, which I think hurts particularly bad since you have to restart the level after just one missed jump.
-The sound effect for restarting and transitioning levels is difficult to listen to, especially combined with the frequent restarting that comes from the last point.
I think this is a great starting point, and I would be interested to see if you decide to take this idea further. Good job!