Do anyone know how to put this biểu tượng onto my user icon?

easy, in your thông tin các nhân under your hình ảnh there is an uption in blue that says "upload photos" click in that and then đăng tải the bức ảnh bạn want! down it says: "make this imagen my icon" hoặc something like that, click in the little square and then click in "submit imagen" and tadah! bạn have that as an biểu tượng ;)

Very easy!Just click đăng tải pictures on your profile. Then, look for the name of your icon. Then, check the box that say "make this picture my thông tin các nhân picture".Then, cick "upload picture". Then, wait for it upload. Then TADA! There it is!