Change pictures for advertiser

I have an existing ad and want to update my pictures. How do I do it??

I notice some advertisers delete photos within their ads and then reply to the same ad with new pics. Is this what you had in mind?

Bump your ad with new pics by replying to your ad thread. If you change the pictures in your current ad, it won’t bump the ad. Every time I have new pics, I create a new ad. If I want my current ad to go to the first page, I reply to my post with new information. Usually my weekly schedule (or new pics) or just a couple of hearts if I want to bump in a hurry