i’ve found that pictures are only useful (like tarot cards) in prompting a link. the scrying sense is used on the image to draw the psychic connection. the picture is just the tool, and not an actual fetish item (unlike something owned by and personal to the individual, although that just strengthens the link, and does not necessarily replace it).
for example, if you scry the image, it becomes easy to observe/share dreams, emote with the target very closely and influence them from a distance. again, it’s like scrying tarot cards. if you have met them, they’ve impressed upon your subconscious already (even if you have trouble consciously remembering) and may even appear in dreams etc, despite only a brief encounter.
i guess it’s like a telephone. don’t mistake the communication medium for the target themselves. if you wanted to harm someone, you wouldn’t call them on the telephone, then hit it with a hammer thinking you’re injuring them; they’re still wherever they were when you called, but now you’re down a phone.
i perform ritual late at night, and i won’t bother trying to curse anyone until being in my circle feels like being inside their mind. like the edge of my circle is the inside of their head, and i’m their dream (it’s hard to explain but if you’re familiar with the feeling of a spirit’s presence during evocation, it’s like that, except it feels like you’re evoking the room around you rather than one spirit, and the room feels like the target’s presence).
this technique can also be used to heal or whatever else, of course.
kind regards, james.