Use the pictures That I sent to make 3 sentences for each fundamental element  All together there will  be 18 sentences but make sure you say which portait you are using in each sentence  the portrait number is at the bottom corner of the portrait you must also use the principle of design in the sentences to explain the picture. fundamental Of elements are :  line, space, shape, texture, value,  and color 

the principle of designs 

unity variety

emphasis subordination

balance asymetrical/symmetrical 

repetion rhythm

directional forces

scale proportion 

example: in drawing 18 the artist shows directional forces, where as the lines emphasis the work of portrait face.  Edit