Testing, testing...WHUMP, WHUMP...Is this thing on?

Thank you for the offer. I thought I followed instructions.
I opened my Flickr account, selected a photo (previously reduced in size), and clicked on the "curved arrow" icon to share it. A box pops up with the URL. I right clicked on the URL, which opens an option box. I clicked on copy.
Next, I navigated to RTH to the test section and clicked on "create thread". This opens a large white box. I typed the "hope this comes through" comment and underneath it right clicked and clicked "paste". The URL shows up instead of the picture. Clicking on the URL opens up my Flickr account, not the picture.
Anybody have a solution? Use simple terms, as my computer skills are obviously limited.
Thanks in advance

I can't find anywhere in Flickr to select BBCode, Pat. The only place I see this at all is at the bottom of the box where I'm typing this sentence.