Complete security in the notes and a complete lack of tension is the only way to go. Also, if you don't need big hands for 10/1; if you're free of tension you can play that with an octave (or maybe less?). After learning 10/11, rework 10/1 while thinking about the arpeggiating motion used on 10/11 while playing the right hand runs in 10/1. You'll see what I mean.
and orlandopiano that rec was very impressive. have you recorded any other chopin etudes? if you have please post!!!
Good luck learning it. 10/10 and 10/11 are murder played back to back.
Regarding 10-11I suggest reading Cortot's comments in his edition, published by Salabert and distributed by Hal Leonard.