Add headers to sticky notes by hand or automatically through Miro Assist

I’m working on a journey map right now with a lot of stickies that have a lot of information in each one of them. I want to be able to add headers to each sticky, where I can control the font sizing and other typography parameters, which would summarize the sticky note in a few words to make it easier to scan.

I want to be able to do this manually or in bulk/with miro assist. If I selected all of my sticky notes and asked miro assist to summarize each one into a few words and then it automatically adds that as a header for the sticky notes. This would greatly speed up the process of providing clarity on sticky notes that have a lot of information in them.

It also addresses the problem of not being able to have multiple fonts/text sizes in one sticky note. I tried adding headers to my sticky notes and I can’t make the header font size larger than the rest of the text.