Choose a clear photo with a simple subject
Open the photo in a photo editor or sticker app
Crop the photo around the subject
Remove the background if needed
Adjust brightness, contrast, and sharpness
Add a white outline or border around the subject
Resize the image to sticker size
Save the file as PNG with a transparent background
Print the sticker on sticker paper
Cut out the sticker carefully
Peel and stick it where you want