Sorry for reviving this thread. I printed this and another vertical picture of the same subject and placed them next to each other at the wall.
I'm new to the whole presentation aspect of photography, but I think this could work out well in the end. It was just difficult to get the pictures to the same height w/o cropping away important parts. Hence the different white framing around them.
Any suggestions and comments about what else could work for presentation?
Yes that is a good idea. Are you thinking about one mat with two cutouts and one wide frame? I thought about that in the beginning as well, mocked it up in photoshop and then somehow didn't like it too much. But I could give it another try. With two separate frames and mats I didn't find a good combination of sizes that let me have the pictures at same vertical size.