Sorry, I didn't see your reply until just now. You might have to wait it out until the listing ends and then start again....? Or you could 'end it early' and try again. Did you use the 'enhancements' feature on page two of the listing form that allows you to add goodies like a larger image and bolded tittle etc? It costs a dollar, I think, to add the 'enlarge photos from search results' feature. If you've paid that dollar and it still doesn't work (check your seller account to see if the fees were applied) you can and should call ebay to tell them it failed and you want your buck back. I always do when things go wrong. It's time consuming but it's the principle of the matter. When technical glitches mess things up, no one knows until it's reported.
