“You can copy the looks, but you can’t copy the skill.”
Chen Yingjun said that to me once, when i did a rather good copy of a move in laojia. What it means is that it is easy to copy the outside appearence of a move, but it is impossible to copy the gongfu. Skill must be earned through practice, and through the understanding of the internal movement that dedicated practice fosters.
Of course, copying the looks is the first step, but it is only the first.