Embeddings: Princess Celestia

Strengths: 0.5 - 1

For inpainting cutie mark: Strength 1

For inpainting eyes: Strength 0.1 - 0.3 or off

For inpainting wings: KFT Requiem or Pony Realism

When inpainting with other models, go back to flux and hit your changes with 0.05 - 0.1 of denoise for a clean finish.