I had a very frustrating experience. I submitted photos for a montage, and gave my approval for a first draft, well in advance of my needing the montage. They never got back to me so I finally called and they said "oops!" Then they sent me an unacceptable first draft (which, when I pointed out the errors, they agreed was not OK)- they sent a second draft and I had a few edits and they said they would charge me because I hadn't made those changes on the first draft. That was because they made the changes I wanted to edit AFTER the first draft. In the end, they agreed not to charge me, but the whole experience was unpleasant.