Congratulations you won tickets to the show. To change your profile picture you need to shrink the size first and then upload photos to photo bucket. Even though you don't know Chinese maybe you can recognize the Chinese characters. The tab where you see your profile name select tab 4 which says 控制面板. And then select the last tab that says 上傳頭像。 Once you see (頭像地址: 您可以填寫圖片地址,例如
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There's a blank space enter the link of the photo from photo bucket. Hope this helps.