I truly enjoy taking photos. With my first couple cameras I would take photos anything. I'd find landscapes, birds, trees, bees and even my dog and just keep snapping away.
Over time you start leaning towards certain kinds of photos. And even start following some rules.
Landscapes : Horizontal photos
Portraits: Vertical photos
I would say that these are great starting points, but don't hesitate to mix things up. Think of what you are photographing and also how you'd like people to see them.
When I take photos at weddings and portrait sessions I make sure to take both horizontal and vertical shots.
The horizontal photos can end up being used for a two page spread. This is for both scenes and portraits.
Even if you're thinking to yourself "I don't know if there is a photo there if I change perspectives" give it a chance. Possibly you see a whole new photo or get an idea for something new.
In some lifestyle portraits the background is just as important as your subject. So you might want to step back and capture the scene as well.
Or maybe you are trying to get a nice detail shot to accompany a portrait or scene. These smaller photos can help with the story you're trying to tell.
So give it a try. Please look at the two photos below and you'll see that it's the same subject, but they both have a slightly different message.