There are many ways to let others know that you're well-versed in a subject:

1) Show them your credentials and certifications.

Probably the default way here in sunny Singapore, this definitely works with the right crowd.

For example, you'd want to do this if you're presenting to a group of academics.

You might want to skip this if your audience comprises self-made business owners who didn't go through tertiary education.

2) Present your successful and not-so-successful case studies

This may or may not be in the form of a story.

Maybe it's the scientist in me, or maybe it's my information hoarding tendencies that say, "Just the facts, Ma'am," but, personally, I don't like presenters who tell a story for everything.

Certain things can just be a list on a slide, a chart, or a graph.

My point is, present your case studies in a way that makes sense to your audience. And switch up your methods as necessary.

This isn't one-size-fits-all.

3) Make your knowledge accessible

Any time someone asks for your opinion / advice, give it to them.

Build up an archive of what you know, and put it up where others can find it.

I started with a blog, then social platforms, and now I'm working towards podcasting and videos.

I didn't say to give it away for free, necessarily.

Charge for it if you want, but make it accessible.

Nobody will know what you know, if they don't know that you know what you know.

I'll stop now and give you a second to process that.