does anyone know how i can get a kold of keith urban?

Ok I need to get a hold of him because i need his permision to do
somthing. The reason why im asking is because i need his permision to
do something. The thing is, I'm into making things out of fabric and i
wanted to blow up a picture of keith onto a t-shirt, parts of a quilt
or a pillow and sell them. my dad told me i had to have permision to
do it thogh. Thanks for your time! -Jamie