Practice makes DMA of Skills

What I mean by knowledge is understanding and remembering how things work, practice is process of finding the most efficient(the efficient way is not same for all)way of using the acquired knowledge. Skill is the perfect blend of knowledge and practice. During the process of acquiring a new skill our brain uses all most all of neurons and create new connections between the neurons, consequently we feel so busy and cant do anything simultaneously. But practice make everything simple, which decreases the number of neurons used for doing a particular task. As we master the skill, number of neurons used decreases and released neurons can be used for some other task. Once something is practiced perfectly it works like DMA without active involvement of brain. Without involvement of brain it will be faster.