In Your Opinion, What is the Importance of Planning Before Working on Your Art Work?

In my opinion planning before working on my art work makes me more prepared and organized. It helps me to compare and contrast my decisions on how to make my art work as successful as I really want. Planning is also a strong guide line for me. If I am doing an art work for a client, showing them my plans that I have penciled out would give the client a firm idea of what the art work is going to be like in the end. In advance, from showing them a negative or positive feedback from the client would really save me from making a mess or getting confused and becoming unsure in the final stage of the art work.