It's not a problem, really! Sooo many people make the exact same mistake.
Please don't stop adding photos, we love photos here!!
Just make sure when you are on the database page, use the Adding Actions section on the left side where you see the following:
» Upload a photo
» Upload a URL photo
» Post a comment
» Add an event report
» File a local report
When you enlarge one of the database images and scroll down and you'll see a subject line and message box just like you see when posting a comment to a thread. Above that box is says "Post a comment about this photo". I think many people just don't see that, all they see is the 'Upload an image' button.