ichauch

...and connaisseurs:

How much "air" above a models head should a picture have?

I noticed that many of the pictures I bought from a content provider have an extreme amount of free space above the models head.
When resizing and cropping the pictures, I don't want to give an impression of narrowness, and the free space can produce sort of a "freedom feeling" in the viewer, still: it's unused space.

Any rules of thumb (you use)?

__________________