Guides for pruning Banksias

I've got a young silver banksia that is getting a bit unruly and I'm looking for a useful guide for understanding how they respond to pruning. Ideally want to understand what they respond well to and how I can train them to grow to suit my garden.

I basically want to encourage it to grow upwards more, so that it can rise above a fence to gain better access to light and provide screening from neighbours. Also hoping that as it grows it'll create room for a bit of an understory in the same location.

Does anyone have any recommendations?