Frame
Will your piece be enhanced by a frame, or an additional frame beyond the margins of the page, and what would that mean in your narration? The classic example of a narrative with a frame is One Thousand and One Nights, but there are so many more: Wuthering Heights, The Princess Bride, Alice’s Adventures in Wonderland, Pale Fire.
Style, and maybe more importantly, whose style?
How much should your subject influence your style? For example, if you’re writing about childhood, should you write like a child? Probably not entirely — but maybe a little? Striking a balance here is crucial, and I always try to think thoroughly about how much of a shadow my own authorial voice is casting over my community of characters, their setting, etc. (That shadow can be thematized, too, of course, just as shadowy self-portraits of photographers crop up every so often in great portraits.)
Contrast
Contrast in sentence length, diction, met expectations vs. unmet expectations may help keep the reader on their toes. (Too much may take them out of the story, just as excessive contrast in photography can feel off-putting or overweening or just gratuitously odd.)
Texture
Sometimes used to refer to sound patterns in a poem, like assonance, consonance, alliteration, texture can also refer to the linguistic features of prose that help shape the reader’s understanding of the story by creating an atmosphere that is particular to your vision and your fictional world.
Depth of field (aka “portrait mode”)
Depth of field is also called “the zone of sharpness.” Deciding on your depth of field means deciding how much environmental context you want to give your reader in your story. You can reduce distraction by blurring or omitting the things that aren’t directly related to your subject. Or you can do the reverse: You can celebrate your subject’s whole vast network by depicting as many connections as you can fit into your frame, creating not so much a portrait as a landscape.
Even more to consider
Try thinking about exposure (brightness), saturation (intensity), grain (the reader’s awareness of your words on the page), the vignette option (Do the edges of the image, or the story, or the poetic reflection darken as a way of helping your reader focus on your central characters, themes, movements?), the circular blur option (same as above, but lighter), or any of the edits you can make to your photographs on your phone. How do you translate shifts like this into your prose?