I thought I'd never guess my way to the template location to glue this rat! It was all "trial and error", but you can see that it's now at the end of every post, even back to the beginnings of time (well, 2004, anyway).
Chuck Croll (The Real Blogger Status) advised me to expand the widgets and I did. I was still guessing, but I managed to place the photo URL in the right place, as shown below.
If I had not expanded the widgets, I wouldn't have found all the code. In fact, I can't search for "artsy" in the template even now without again expanding widgets! A new trick from the Blogger bastards!
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<div style='clear: both;'/> <!-- clear for photos floats -->
<img alt='artsy rat' border='0' src='http://photos1.blogger.com/
x/blogger2/6621/3732/400/748907/artsy%20rat.jpg'style='CURSOR: hand'/>
</div>
</div>
