Seriously this is a difficult piece to interpret, it has a lot of "down time"; I've heard people snooze and slop through this until the octaves at the end, which then seem out of place. I would focus on keeping the rythmic phrasing of the lyrical non-virtuoso parts very definite, not metronomic but alive and rythmic. Make sure that all the lyrical sections relate to one another, and don't sound vague and disconnected. Feel and be the melody, and keep it pulsing, otherwise your audience may fall asleep. This is not an easy piece for an audience, and it does not play itself (once you have the notes down) like a Hungarian Rhapsody or the Mephisto Waltz, it requires you to make it go. practicingnow is right about the literary source, you shuold be familiar with it to really know what Liszt was communicating, and what the inspiration of the piece is.