Next time you want to include a photo, Lorraine, try going to
Gallery - Upload Photos (on the toolbar) - select the blue image library option and follow the instructions from there.
Read that link from Nige first; and there are also help hints attached to the blue image library icon. Also some advice in the FAQ section.
But basically, if you can get a photo to approx 800 to 1200 pixels on the long side and a jpeg at around level 8 to 10 compression everything should work fine.
The upload system on this site has a few unique 'quirks' and most of us had some difficulty initially. Occasionally, when I'm not thinking clearly, I still get something wrong.