Tiki, I see where you went wrong posting your picture and I only see it because it gets me all the time as well. You correctly loaded the picture to the site and copied the address. But you made a mistake of trying to post the picture by clicking on the yellow postcard icon.
The yellow postcard works for normal picture posting, but when you use the RV.net posting app you can't use the icon and instead you have to just paste the text right into the body of your posting.
The fix is easy, just edit your posting and in picture line you will see there is a double IMG one lower case and one upper case with square brackets at the beginning and end of your picture. Just delete the lowercase img's and brackets from each end and your picture will show. If you want an example of what I mean do a quote on AnEv942's posting with your picture and you will see how the address is different with only one IMG at the beginning and end.
Awesome steps by the way.