Adding borders to photos
I want to be able to order prints with borders from several printing services; for instance, ordering an 11x16 image on a 12x18 piece of paper. Some of the services say that they can't add the border, but I can by using photo editing software to add the borders to the file I send to them for printing.
I've heard one can do that via the print module in Lightroom, but is there a way to do it in the Mac Photos application?
Thanks,
David
MacBook Pro