What if the calligraphy copy can't look like it? Only its shape, what about the god without it?

Imitation-easy to get its shape, close-easy to get its spirit, these are two ways to learn calligraphy-calligraphers advocate more-more close and less copying-and you are-practice more.

Also-Reading-Reading-A Collection of Comments on China's Calligraphy History-

Also look at professional websites and periodical exhibitions.

Also look at the monographs of Taoism and Confucianism.

It also depends on your talent, understanding, talent, method, vision, willpower, concentration, time and professional accomplishment.