You may know this already, but in case somebody doesn't.

If you wanted those to show up in the body of the post...

This is the first image:


Insert and interesting story, or whatever...

This is the second image:


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Basically... Right click on the Attached File image (You should be able to do that using the Preview Reply mode) and "Copy Link Location" to put it in your Windows Clipboard, then use the Full Editor's Insert Image Link, paste the Clipboard's link location into that. Repeat as necessary for each image, placing them within the text where you want to them to appear.

There may be an easier way that I haven't noticed yet. If somebody knows one, they are encouraged to share their knowledge.