Strength at 0.9-1, I recommend putting "light makeup" at the end of the prompt and seeing if it brings better results, if not just remove it. It depends on the checkpoint.

put this in negative prompt: ugly, deformed, airbrushed, photoshop, rendered, (multiple people), blurry, child, mouth open, teeth

works great with Acorn is Spinning: https://civitai.com/models/112013?modelVersionId=703094