2 i thought blue mean is sad in the picture. Then i want change the sad style. I want to sad change to hope . Then i try to find the hero. To replace the bulding. I am not change the color. Because i want to style is hope. Like God to change the people’s heart. 

3 i use the analogous. Because i do not want change all style in the picture.i just want to change littile bit. 

4 i change the material . Becuase change the material. Becuase i do not want the old picture look sad. I want to change it look like hope and funny. So that is why i change the material.