Slider Image

I changed my header image, which worked fine. However, the previous image (which is very similar to the original one) now shows up in the slider images and I can't see how to remove it. I made this website, but I'm a fairly novice user, so hope the answer is fairly simple! http://www.claudiaroseseries.com/SheilaLoweBooks I just figured it out from another post! Thanks anyway. No doubt I'll have more questions soon, lol