There are many things a person can do to improve the visual environment. You can begin it in and around your house. You can organize your things neatly or you can give away unnecessary furniture. You also can put a dustbin in your room to put your rubbish on it. When you have enough awareness, you can do it in your neighborhood. You put the rubbish in the street in the dustbin or take part in tree planting campaigns. You shouldn't draw on public walls or stick ads in the wrong places because it can make the environment less beautiful. That is my advice and you can do it to improve the visual environment.
   Mình tự làm á, cậu chấm điểm cho mình với nha. Cảm ơn cậu nhiều.