2. In addition, you can write some western art theorists, such as panofsky, Wolflingomblich, Buckhart, riegel and winkelmann, and write their theories about western painting art.

3. Also, you can introduce and contact a point in western painting, such as the comparison of the expression forms of people's clothing in different periods and the expression interest of light in different painting periods.

I suggest you read the book Art History written by Gombrich, also called Art Story, which will be of great benefit and help.

I don't know if it will help you, I hope it will be adopted! joke