'Read books' crossposting and formatting

What’s the best way to format a Bookshelf-based review so that the first 300 characters or so post on BlueSky and Mastodon, with the generated link, and the full review is on on micro.blog.

I can’t seem to figure out where to put links, title, Bluesky/Mastodon summary so it all works together properly.

What are other people doing?

I think the best way to do this is by putting what you want crossposted into a summary for a post with a title: Manton Reece

Done. Is there going to be a reply?

I don’t really know what you’re looking for in terms of reply?