Use the 3 gray bars in the top right corner

Then click on my profile, then my update.

That was a great question. I too did not know how to update my story. Thanks for the answers everyone!

It's ok Rhonda please don't be sorry. It takes awhile to navigate and experiment with which does what and what does which. I'm still learning too. 🤪

Thanks everybody for your help. I don't find their navigation intuitive. Must be a senior thing!