You must develop quality before speed.
My son mentioned that one of his friends makes excellent snowballs. When prompted, he recognized, of course, that the friend developed this skill with practice.
But more important, it’s how his friend must have practiced. Before he could get good at making snowballs quickly, he had to learn to make snowballs well. The quality came first, and once his hands new the motions, he could begin to perform them more speedily.
Quality first. Then speed.