你 mean your user icon? That's very easy. Just go in Profile>Photos. There is a button with a plus sign in the 最佳, 返回页首 right saying "upload new photo". Click in it. 上传 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 你 like is, click on View 更多 Photos, then click 上传 New Photo. 你 then choose a 照片 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 照片 and click 上传 照片 and 上传 it from downloads. 4. A button says make this my 个人资料 picture. 5. Click 上传 then there ya go finished.