Thanks so much, everyone! It feels good to share with other quilters. It's been too long.
Cherrybsixty, I'm not sure if I know the right answer, but this is what I did. I uploaded the pics to an album in my QB profile using my laptop (and three attempts at resizing before the files were the right size to be allowed). In the album, you can click on the photo and get a URL. I copied that URL and when I chose Insert Image in my post, there's a place to paste the URL and see the image preview, which takes a beat to appear. I just messed around until stuff worked -- hopefully that will work for you too! Let me know.