I think the strangest thing about being a creator who has made a lot of different things is that there are things that feel obvious to me now, but I learned through doing – often the hard way, and sometimes by doing it right first time by luck!
I’ve recently been approached by someone I respect a lot in the RPG creation field. He’s been doing this a lot longer than I have, but doesn’t have the same kind of experience, because he chose a different approach. I’ve been able to advise him (and hopefully help!) on a project he is working on at the moment.
My point is, no matter how experienced another creator is, I think any creator can give another perspective to them, and possibly even advice on things that did or did not work for them. Everyone’s creative experience is unique, and that’s fantastic, because it means that there are always other ideas.
So, if you’re experienced, let people pick your brain. And if you’re inexperienced in the thing you’re doing… ask someone what they think!