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

https://atomic-wiki.win/index.php/How_Do_I_Decide_If_My_Avatar_Needs_a_Plain_Background_or_a_Lightly_Textured_One%3F

When choosing or editing a gaming or anime PFP, focus on a clear silhouette and good contrast to make the image pop when shrunk down. Crop tightly around the face, keep backgrounds simple, and avoid text