I am contacting you because I am interested to use one of your excellent picture of universe. I would like to use your original picture, and then modify it with extra things and comments. Next month I will publish an article in Nature Communications jounal (article is about organic chemistry work) and I am planning to submit a featured image to be considered by Editors as cover page. I kindly ask you how much money should I pay you or what any other matter should I do?? Please, I would really appreciate your positive answer. For sure, if your reply is negative, I will not use your wonderful image. I am looking forward your reply at your kind convinence.