Ahah!! Well -- I practiced by sending the link via email to myself. Nothing happened when I clicked on the link. I was pretty sure I had done it right, so I didn't know what was wrong.
Doesn't matter, Deb -- I wanted to send a photo of one of my Irises to my friend to whom I had given a couple of rhizomes -- just so she could see what it was going to look like -- and I didn't have a photo of my own.
Thanks for taking the time to explain the process to me.