Those are separate/individual paintings, to apply them to your painting template you will
have to copy-paste/import them into the actual "paintings_kristoffer_zetterstrand.png" file.

The painting file can be found within the
\.minecraft\resourcepacks\Ornate 5 Re-resurrected - with Alternatives-converted-[mc1.6]\assets\minecraft\textures\painting

To do that, you gonna need some editing program for images that can handle transparency textures (ie. Paint.NET, GIMP, etc., not MS paint).