I went to Keegan's Flipgrid for "Semester Goals" and clicked the big green button (I love that big green button!) to record my video. After my video was uploaded to the grid, I clicked to get my specific video view which has a URL like this:
https://flipgrid.com/ca06f6
Then, I clicked on the "share" icon, and chose the "embed" option: "embed a response card" is the option that makes sense for putting this in a blog post.
Then, I went to the HTML view in my post and added that embed code down at the bottom. Presto! I have ... video!