PHOTOGRAPHY COMPOSITION TIP 2: GET CLOSER TO YOUR SUBJECT/FOCAL POINT
How Much should your subject fill up the frame before you get too close? It is hard to say that your subject should fill 40% or 70% of the frame. It depends on what you are photographing and how big a role the context plays in your photo.
Your viewers should never be in doubt, what your subject is. You should get closer than you think. For this, I suggest that you use the best zoom you have, which is your own feet. Often they can get you in the exact place you want. For example, if you take photos of mushrooms in the forest you should consider getting so close that the viewer can see the texture of the mushrooms surface.
In landscape photography, your subject will often be a great vista, like a mountain range, it becomes a little more tricky since most likely you are far from the mountains. But, still the mountain range or the interesting part of it should fill the frame, and you should decide on what to include in the photo, and what to leave out.