Perfection in art?

Does art need to be perfect?  Isn't the fact that it is "art" itself means there is free-form, creativity and no goal such as perfectionism?

If a child draws or paints or builds something, probably by imitating another great art, isn't the process of doing it itself rewarding?  Why does the end result have to be 'perfect'?

Perhaps when a budding artist is taught to hone her skills, it is the perfection of the skill, not the end result itself that her teachers are concerned about.  Probably, the teacher does not want lack of skill to be a hindrance in art education. I think aiming for perfection in that area is more of skill development.