I am not a new player, but 'new player guidance' feels the right sort of place to ask this question.
I like VON 5/6, classic quest, run it enough times to be familiar, but not so many to be bored. However, I am embarassed to say that I have never got the hang of jumping around the barriers on the bridges. I put on jump, FF, and ... fail to land on the far side, bump off the edges and down into the lava.
Any tips? Do you need to jump at the very highest point of the girder? What spot are you aiming for once you float around the upright bit?