あなた mean your user icon? That's very easy. Just go in Profile>Photos. There is a button with a plus sign in the 上, ページのトップへ right saying "upload new photo". Click in it. アップロード an image from your computer and then check mark "Make this image my user icon". Then it'll be your new user icon.
Profile, then to the right of where your name and stuff あなた like is, click on View もっと見る Photos, then click アップロード New Photo. あなた then choose a 写真 from your computer and remember to check the box that says Make This My User Icon. Then click Upload.
Okay here are the steps: 1. Pick an Elsa picture. 2. Once you've chosen one go to profile. 3. Go to 写真 and click アップロード 写真 and アップロード it from downloads. 4. A button says make this my プロフィール picture. 5. Click アップロード then there ya go finished.