When picking or editing a gaming or anime PFP, focus on a clear silhouette and...

https://dlf-ne.org/why-do-subtle-expressions-fail-in-small-profile-icons/

When picking or editing a gaming or anime PFP, focus on a clear silhouette and crop it tight on the face to keep key details visible. Keep the background simple to avoid distractions, and test how it looks in both light and dark modes