Better with anime models.
Base concept: (Girl silhouette and [...] in a round frame).
I usually add "forest" but other places can be used (city, beach...)
A dress is the best option.
Concept variation: remove "frame" (and put the word in the negative prompts) and the image takes up the entire "page"
Useful prompts: colorful, bright color, vibrant color, ultrad etailed, intricate details
Strength: 0.7 -> 1 (1 is better)