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