I discovered something about this image that might upset you. I saw this very image you made being used on doormats in Brazil. Someone might have stolen your photo. I am sorry to tell you that. I am also a photographer and I know how important it is to respect the intellectual property and copyright of others, that's why I am warning you of what happened. The moment I saw the doormat, I told myself: "hey, this image has copyrights!"
Thanks a lot that you like my work that much that you want to feature it there! But I'm sorry to refuse the offer It is SO incredible hard to protect my work and it is stolen so many times. If I would give you the permission once a lot of people would use my work and most of them would not even ask and when you try to avoid it they would claim "Hey Jkfrt had the allowance..." I hope you can understand that!