Open the Contacts app and select your name.
Tap Contact Photo Poster, then tap Edit under your contact photo.
Swipe left or right to see all posters or tap the plus icon to create a new one.
Edit or delete existing posters as desired.
Set a default poster for all calls or specific posters for specific apps.
Save your changes.
Explore more customization options if needed. (Image Credit: All Images From Freepik)