Embedding relys on a constant source, i.e. a computer or site that never shuts off. I.e. It is a fancy link that allows you to not switch sites to see it. If you use a photo site, embed. If the pics are on your equipment, upload them with the tool.
Open the composer, type or get th cursor flashing in place. Now in the box at the bottom in the blue there is a blue paperclip "add attachment "; click that.
Now find the photo (you may have to allow it).
Wait for loading, wait for processing, wait for "sucesss". Now more can be loaded if you choose (actually you can search for the next while one in loading, a good browser will let it form a que.).. but once the loading is "resting" (success) another small print line & check box appears in that box(mid box). It says "insert into text full sized" check that or wait. You can load more or press finished. Photos will begin loading into the composer with any text once you hit finish if you checked the insert box.
If you wait, once you return the main page, at the bottom there are thumbnail views of what you loaded. At the bottom of each thumbnail box, there is another "insert" option. This option allows a choice of three sizes. Failing to insert any pics results in only thumbnails at the bottom (not always accessable by some OS-s, like mine, so inserting them is nice) The collapse option, closes the thumbnails from our view (an asthetics option).
Waiting will also let you ad photos one at a time if you typed a bunch of text already. Each photo will insert where the cursor is; allowing placement whever you want.
A bad placement? Backspace erases the photo, but not the loading. Try again.
(you must use the trash can and confirm the delete to erase a loaded pic.)
this is me loading the pic above for this post. (The above has my junk platform 0n30, static again on its foot of track as I think I want to turn it into a stationary steam engine/ winch system for ore cars. When I find the better shots I'll show you. (note everything here is basically junk, scrap and cheap Applebarrel craft paint from Wally's World. "Good enough for my house" 
I wouldn't trade it for a storebought look at any price....(well I would, but I'd sell and build another junker.... way more fun 
Note the new line & chk.box under "choose"
