To learn calligraphy you must first copy the works of masters.
Tips
culture
临摹 is the core training method in Chinese calligraphy and painting. 临 means working from the original placed beside you, while 摹 means tracing through a transparent overlay - together they describe the full apprentice practice.
mistakes
Don't confuse with 模仿 (imitate). 临摹 specifically refers to copying art/calligraphy as a practice exercise; 模仿 is general imitation (behavior, style, voice).