Your profile found in Settings > Account > Profile is where you personalize how other team members will see you in your Cosmos workspace. The default avatar will be the first and last initials of your account.
Select Settings in the bottom-left corner of the screen, just above your profile icon.
Open the Profile tab. The option to change your profile picture is the first
Click Upload, then upload a new image in JPG or PNG format. Alternatively you can click Delete to remove an existing profile picture.
Your new profile picture will automatically be updated and saved.