I think we can all relate to how shaky we were at first on a platforn.....drawing our bows. I can only tell you that it gets better.....and pretty quickly (it did, for me).

One thing you may want to try (and I sincerely hope you'r eusing a harness)......is to cinch your harness up to the point to where it's taut (tight) while you're sitting. That should give you the confidence when you stand.....that even if something bad happened and you lost your footing.....it would probably grab you before you even could fall off the platform.

Peace of mind breeds confidence.