The forums do not provide online hosting for the image. You need to find a place for that. Any of the many web sites that host people's pictures will do, but a lot of us use Photobucket. Then, you need to compose your message in the "rich formatting" mode. There is an icon for a single frame of photo film in the tool bar. When you click on that, a window opens up asking for the URL (internet address) of the picture. You then copy that in the window, and continue the rest of your post.