Next session idea: how to add length to a novel without it becoming ‘filler’ or ‘padding’.
You can often tell when scenes and characters have been added as padding. Especially flashbacks. And sub-plots that don’t contribute to the main plot. Or characters who turn up to deliver further exposition and disappear.
There’s usually a reason why those Deleted Scenes get deleted or the editor’s red pen strikes through whole pages with a side note that just says “pace!”