What should I do? I can't sketch head, sketch and color still life, but I really want to take the photography department!

Step by step, lay a good foundation. Sketch, color and sketch are all related to photography.

The black, white, gray and high-gloss surface of the sketch are all related to photography.

Color is to examine your color block ability, such as scenery or sunset, which is necessary to learn color.

Sketching is to examine your observation and reaction ability.

So this is the basic knowledge, study hard. I have been working hard for my animation design and dream. This is youth.