Posted 10 September 2011 - 09:28 PM
First, the image itself is almost the whole page... rather than merely the header itself. Second, because your URL for the image was an email address ccvandyck@.... Thought it may have appeared, the link wasn't correct.
Please take a quick look at my site...
where you'll see a full width header background.
You need an image more than 2000 pixels wide but not more than 3600px.. and not too tall.
Make sure in the Design Control, where you've uploaded your image, you have the vertical position set to 0 (top) and the horizontal set to 50 (center). Also, make sure you set the repeat correctly. For one single image, just set it to Do Not Repeat.