The generator doesn't know Charlotte or Kristin, there is no information about the location or anything at all. You're just putting two vaguely different piles of keywords into a void, leaving the gaps for the generator to fill in.
Here are two quick & dirty examples of how you could do it (graciously provided by an AI prompt enhancer helper character). You don't have to do it exactly like this, you can use art styles etc. the generator you are using provides, you can leave out details for the generator to fill in, but you should give a clear idea of how things/persons interact with each other so it actually "knows" what you want. Notice how Charlotte is always on the left and always looks like her description? And how there's always the bench and the fountain, the park, leaves etc.?
Charlotte, a slim woman in a practical grey jumpsuit, leans casually against a wooden park bench on the left side of the frame. Her long blue hair spills over one shoulder as she laughs with genuine amusement, eyes crinkling at the corners while pointing playfully toward Kristin. Sunlight streams through golden autumn leaves, illuminating dust motes dancing in the air around her. Kristin stands near a mossy stone fountain on the right, fiddling with the hem of her green dress as she stares at rippling water. Her short blonde hair catches the afternoon glow, cheeks flushed pink beneath freckles visible in the natural light.
- Art style: Casual candid photograph with shallow depth of field and natural color grading.
- Composition: Charlotte occupies left third with bench and oak tree trunk. Kristin positioned right-center near fountain edge. Background features blurred park visitors walking dogs along distant path.
- Lighting: Soft directional sunlight creating gentle highlights on hair and skin textures.
- Color palette: Warm amber tones dominating foliage, contrasting cool grey jumpsuit and vibrant emerald dress.
- Details: Slightly out-of-focus maple leaves foreground, water droplets frozen mid-splash in fountain, scuff marks on Kristin's ballet flats.
- Technical: 85mm lens, f/1.8 aperture, ISO 200, 1/500s shutter speed capturing motion in fountain spray.

Charlotte, a slim woman in a grey jumpsuit with cascading blue hair, leans against an ornate park bench on the left side of the frame. She laughs openly, one hand covering her mouth while the other gestures mockingly toward Kristin. Sunlight filters through autumn oak leaves, casting dappled shadows on her smug expression. Kristin stands near a fountain on the right, her green dress rumpled as she stares at her own reflection in the water. Her short blonde hair catches the golden hour light, cheeks flushed pink as she nervously twists a fallen maple leaf between her fingers.
- Art style: Watercolor illustration with soft edges and warm natural tones, evoking storybook aesthetics.
- Composition: Charlotte occupies the left foreground with bench and flowerbed. Kristin positioned right-middle ground near stone fountain. Background features winding gravel path, distant bridge, and foliage in fiery oranges/reds.
- Lighting: Late afternoon sun creating long shadows, backlighting Charlotte's hair with halo effect.
- Color palette: Earthy russets and ochres dominate, contrasting Charlotte's cool jumpsuit and Kristin's vibrant dress.
- Details: Crumbled leaves near Kristin's shoes, intricate ironwork on bench, water droplets catching light in fountain spray.
- Technical: Medium telephoto compression, subtle bokeh on background trees.
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