Notice whether the space around the subject seems to open up the image or draw you inward. Consider how much of your impression comes from the frame itself and how much comes from the subject within it.

A person in a portrait image
One of the images selected for viewing
A portrait included in the photo collection
An image to explore at your own pace
A person in a frame from the portrait series
A moment to look more closely
A framed view of a portrait subject
A view to consider within the sequence