I tend to leave a fair amount of "negative space" around the subject when I'm processing an image; space that is not filled with an element of interest.  I feel like the subject needs room to move about and breathe.  Too close a crop to the top of the head and it makes me feel like the ceiling or sky is falling and crowding them, and then I start feeling tension as described in last week's blog. Let's look at this little stunner, Lexi; she let me get right up close to her for this image. I was only inches away. I love the image, but I feel that she's a bit too centered, so I'm going to see if I can improve it with a different crop.