Your biolink landing page can have a picture that represents you or your brand. It could look as follows.
This provides your visitors a recognizable image, to ensure that they are interacting with your brand.
You can add or change your profile picture from Dashboard > Project > Biolink > Settings
Tap on the circular picture icon or your existing picture
Select an image you would like to upload (recommended resolution 150 x 150). Square images recommended. The square image will be centered and properly cropped into a circle.