Adding a profile picture makes your platform more human and friendly. This enables you to put a face to a name.
Here are some tips to make a positive impression:
Choose a recent, good quality photo.
Wear business attire.
Smile :)
To add a profile picture, all you have to do is:
Go to your profile settings by clicking on the button "Settings" located at the top right, then on "My profile settings."
Upload your photo (maximum weight : 10Mo) by clicking on the button "Select a file."
Save your changes by clicking on "Save."