New fwb has a knife kink

I (24m) recently started sleeping casually with this amazing girl (25f), and both been very open with us wanting to explore eachothers kinks and fantasies.

She told me that she has a small things for knives / knife play, but that it still a new thing for her and she’s never experimented at all with it. Whilst I’m not against it, it’s just not something I’ve ever thought about really, I’m into back scratches and leaving other marks on eachother during sex so I could definitely be open to it.

Any advice on first how to explore it with her safely, what sort of things other people with similar kinks enjoy? From what I can gather she wants to be given some slight marks over her body and maybe have the knife pressed against her etc - but not any actual cutting.

Would appreciate any help on what could be hot to try and how I can get into it as much as possible myself