When I play big jumps like those in Liszt, I pracitce with my eyes closed..
It's difficult at the begining and at start you'll play a lot of wrong notes, but when you practice on this way after a while, you'll can play very clean and what is more important you'll understand how important is to hear yourself-when you can really hear then your sound will be better and then you'll have energy to play Valse in the grand manner..