Describing an uncertain face outline

[MiaEr]

I am cataloguing two old family photographs whose subjects have not yet been identified. One picture is frontal, while the other shows a slight turn and a lower chin. I want to describe visible proportions without treating a face category as proof of identity. Cheek width, forehead width and overall length seem worth noting separately in the record. I have bookmarked face shape calculator as a possible comparison reference. I would appreciate advice about separating an outline observation from uncertainty about the original photograph. Cropping out the hair might help, but I would keep the complete originals alongside any copies. What would you include in a brief record of these visible outline differences? The most useful result would be a transparent note that another relative can review later. The notes should remain understandable without access to our earlier conversation.