What size of mat borders would you suggest for a 4"x6" landscape print with 3/8" paper borders top and sides and 5/8" bottom? I've never matted a print that small. I prefer at least a 3" (4" bottom) for 6"x9" (same paper border dimensions), but I think that would be overkill on a 4x6 print. This particular picture is split toned in thiourea and selenium. The mat board will be a dark brown/black with white inside, double matted. Narrow ebony wood frame.
