What are the principles of design as applied in theatre? How do these help make a splendid production?

The principles of design are harmony, variety, balance, proportion, emphasis, and rhythm. Harmony creates the impression of unity. Typically directors and designers seek to harmonize the parts of each setting or costume and to relate the various settings and costumes in such a way that all are clearly parts of a whole.

Explanation:

answer: the feeling it gives you when you look at it.

explanation:

in every single medium of art, you are supposed to feel something that makes it art. like how a song can make you cry, or how a photograph can make you nostalgic. art is very important for expressing yourself as well, when you are happy, sad, depressed, or angry.