How to choose a costume idea
Start with the silhouette. A costume reads at thumbnail size when the outline is clear: a horn, a crown, a cape, a wide collar, a glowing hood. Next choose a palette with two dominant colors. Finally choose a setting that explains the light. A costume portrait with no light story usually looks like a cutout.
If you are making several images for one post, keep the same setting and change only the costume. That creates a coherent set instead of six unrelated pictures. If you are making one hero image, choose the preset with the strongest silhouette and the simplest background.
Trend-inspired, not trademark-copied
Trend lists are useful for direction, not for copying. When a trend is built around a specific film or game character, translate it into traits: color, hair, prop, fabric and mood. This keeps the output original and avoids implying an official license.
The presets on this page are written that way. “Haunted Unicorn” uses the mascot-horror idea without naming a film. “Green Hero” uses emerald armor without a logo. You can still add your own references in the prompt, but review the result before publishing.
Make a set, not a single image
A Halloween post often needs more than one image: a profile picture, a story crop, a thumbnail and a group shot. Generate the main portrait first, then create a vertical crop and a close-up from the same preset. Keep the identity sentence identical so the face stays consistent across the set.
For video, animate the best still instead of generating a new clip from scratch. A five-second head turn or a slow push-in is usually enough for a story or a TikTok cover.