I have some 20x30cm prints on 12x16" paper and I want to mount them to 40x50cm (16x20") window mounts to match the 8x8" prints I have matted to 16x20". Only problem is this leaves me with an even 4" border all the way round. Ideally the border would be a third bigger at the bottom, but I'm stubborn about making the mount any bigger. I'd like the mountboard to remain 16x20" or another conventional paper size larger than 12x16". Any way of getting round this? Could people explore other options with me. Would you be bothered about having an even border all around or do you feel the extra depth below the print is needed visually? How do you mount your 20x30cm prints, that's if you print to this size. Cheers for any input.