anda go to your profil and click on photos. Once there anda can muat naik the foto anda 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. anda 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.