How to appreciate calligraphy works?

Four elements to appreciate calligraphy: the presence or absence of rules, the quality of words used, the color of ink used and the intention of seals.

Three principles, namely: whether the theme is unified; Whether the technology has changed; Whether the layout is neat.

Usually, you should copy more and try to figure out more, and gradually develop a vision of calligraphy appreciation.

I will give you four words for this question, "from the heart". Think about it, I hope it will help you.