I just posted a thread in which I would've preferred to put the steps/photos in the body of the post - both to correct the alignment (keep portrait) and to allow them to be seen together (instead of having to open them one one at a time). However I do not have any on-line storage and don't wish to sign up for any (this is the only place on the internet where it would be useful to me).
I've found that this is possible if I post them initially as attachments, then use their url in 'Insert Image' mode. Here's an example:
[Edit: Added a second image, and reduced both to half size (225x300) to see if they stack side-by-side or not. Answer: No.]
[Edit2: Try 180x240 for the first image]

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Now ... is this OK? Or am I doubling the storage you have to allocate? I've taken it out of the original post for now.
If it's not OK, you can remove THIS post after answering (and giving me 24 hours to see it) so no one else discovers it.