Finishing work on the tufting frame or off?

It totally depends on the tufted / what you are tufting. For larger basic shapes, I like to trim on frame. It cleans up the rug nicely once I pack in the fill colour.

However, for very intricate details, I'd rather trim that off frame in case I shape it wrong.

This one is a rug I just did when I trimmed on frame. You can see it's nicely shaped and once I packed in the fill, there was barely any overlaying colours. This still isn't complete yet. I bevel carve off frame. I don't recommend beveling on frame, it's much easier on a hard flat surface.