You appear to be trying to link to an image that, in reality, is an HTML page that breaks into a single frame with the image on it. Thus, it won't show up under a normal image link.

However, you can just make a clickable link to it... it worked when I went to it manually.

I'd say the gradients look pretty good for a first attempt. Looks like you've got a few experiments with circular gradients, too. Nice.