Very cool, now we'll have to get you to cut out the red boxed parts at the bottom.
Also as you can see by the segmented lines around the image, if it is over a certain size (pixels width and height, I can't remember what the cutoff is) the forums will automatically rescale the image to a smaller "thumbnail" sized image.
So using these tags, you can place an image in your signature line like many of us have. You simply make the image somewhere in the neighborhood of 350 pixles wide by 150 pixels tall and using those same image tags, place the link for the image in the signature box in the Profile section for your username. Again, if it exceeds the signature image max size, the forums will place a segmented box around it and resize it automatically to a size within the limit.
So the idea is to make your signature image a size so that it doesn't get the segmented box around it. Again about 350-400 pixels wide by 150-200 pixels tall is the limit for an image in your signature line.
Good luck. Feel free to post as many screenies as you wish in our Screenshot forums.