Go to your auction and click on the one you want and than click edit you will see where it says edit in red, than go to the picture you don't want and put the mouse over it and an x will appear than click on the x and it will say are you sure and you should definitely say YES and presto is gone o. And than you can wash them and take new pics than you can add the new pics. Really easy and worth it a lot more ppl will bid and you will get more fans bc it will look like you care about the quality of what you are bringing to others. Good luck with that.