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Congrats, Marlelar!
Now, if you want to put some words below your picture, you might notice that the uploaded image always appears at the bottom of your post. But you can copy the URL for that image (as I described previously) and add words like this:

Our Lady has been asking us to pray the Rosary for the past 600 years.
(You may notice that this second time, the image is a little smaller. That always happens and I have no idea why.)
(You can click "Quote" above this post and see the way this image is defined in the text that appears for this post. It begins with brackets around "img" then the URL address of the image, ending in 4536, then brackets around "/img" -- and that's it!)
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