St Rose Church 1

I was recently asked by a coworker to photograph his church before they took down the Christmas decorations. As we were leaving, his wife looked back into the church, and was struck by the beauty, and asked me to photograph the church from the front steps looking into the sanctuary. This is a 3 exposure blend. I also tried a focus blend but didn't do it right so the altar isn't as sharp as I would like. I would welcome any suggestions to improve this image.

The wife loves this image, and the others I took that evening. It sounds like there is a good chance for extra print sales, probably to church members. Should I still get a signed release from the church giving permission to sell the images? We don't have any sort of official contract/agreement at this point, but I get the feeling I should get something on paper before selling extra prints.

thank you.