A character can look convincing in each clip and still seem like a different person when the clips are cut together. Hair gets longer, a jacket changes shape or a ring moves to the other hand. Start with a reference you can check, then review every shot against it.
The Hell Grind production brief describes pairing character images with a fixed description and keeping different character states separate. The exercise below applies that idea to an original adult character, Lin. It is a prompt-writing exercise; these prompts have not been run.
Write down what stays the same
Choose details that someone can identify in a frame: haircut, jacket length, collar, accessories and which hand wears them. “Cinematic” tells you little about whether the same character has returned.
For this exercise, Lin has a chin-length black bob, tucked behind her left ear. She wears a short navy work jacket over a cream crew-neck shirt, with a thin silver ring on her right hand.
Keep that description separate from the current action. You should be able to change “opening the door” to “sitting at the counter” without rewriting who she is.
Give each reference a job
Prepare a clear portrait and an image that shows the clothing. Check that the references agree: the same haircut, collar, jacket length and accessories. Two contradictory references give the model a problem that more descriptive text may not resolve.
Add the images in JMovie and use the reference mentions attached to those files. “Image 1” in this example means an actual selected image, not a filename typed into the prompt.
Use Image 1 for Lin’s face and hair. Use Image 2 for her clothing and silhouette. Lin is the only person in this shot. Keep her hair tucked behind her left ear, her short navy jacket and the silver ring on her right hand.
Decide whether strong lighting or a filter in a reference should carry over. Character identity and the lighting of the next scene need separate instructions.
Check three ordinary shots
Try a short sequence: Lin pauses outside a bookshop, turns toward the door and places a paper bag on the counter. Design a frontal medium shot, a side close-up and a medium shot with the hand action.
Those shots introduce a change of angle, scale and partial occlusion. They help locate a problem: does the side profile change, does the jacket stretch when she raises her arm, or does the clothing change after the bag passes in front of it?
Write observations with a time and a detail. “Her hair becomes longer after the turn at three seconds” is useful. “The character looks wrong” gives you much less to work with.
Separate costume changes
If Lin takes off her jacket in the next scene, make that a separate state with matching references. Do not ask one description to show her both wearing and not wearing the jacket.
A project note such as “Lin / jacket” and “Lin / indoor shirt” is enough to start. This is an organizing method, not a claim that the platform automatically manages character states for you.
Review before adding complexity
Watch the three clips together. Check the face, hair silhouette, clothing structure, accessory positions and what happens after an obstruction clears.
If the ring alone is unstable, work on its reference or description. If the entire side profile changes, revisit the portrait. Change one main factor and retain the previous result so you can see whether the change addressed the problem.
Your next project starts with a reference set you have reviewed, plus a record of where it still breaks. See the video model options before choosing the settings for your own test.