Just a quick bit of advice - my opinion anyway. I agree that it was slightly rushed and also I think that you could possibly make more use of subtle rubato, without overdoing it of course, at certain places. I thought you played that tricky left hand part with the repeated descending octaves very well, keeping it nice and light, although careful with the pedal when you get to the crescendos. One other thing you might want to try is to make better use of the accents he's written, particularly in many of the left-hand parts, and also on the section around page 12 when you have every C accented along with the sforzando in the left-hand. You mustn't forget or ignore accents like this. Otherwise though, I thought it was a good performance of a very difficult piece. I enjoyed it a lot.