u go to your profiel and click on photos. Once there u can uploaden the foto u want. Then, below the uploaded image, there are three icons. One of which is a teeny person which is make the image your profiel picture. Click it and that foto will become your profiel picture. u can also make it your profiel picture by, as your uploading, clicking the "make this image my profiel picture" box and then it will change your profiel picture once the foto is uploaded.