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