Look at how the subject relates to the dimensions of the frame, from the space above to the space at either side. Consider whether the framing feels spacious or close, and what that does to your experience of the portrait.

A person featured in a gallery portrait
A frame to linger over
A person featured in the photo series
From this set of portraits
A gallery image composed as a portrait
An individual frame from the gallery
A person as the focus of a gallery image
A frame to view in context