A blank canvas IS uncertainty. I feel it every time I set up to paint. But the only way to move from uncertainty to less uncertainty is to try (and maybe fail). And that’s the beauty of deliberate practice—it’s intentional practice. There is no expectation to complete work, only to practice.
We can work with a coach or teacher, who will assign things to practice doing. Or we can design our own deliberate practice. Each session is an opportunity to practice doing what is difficult and finding answers to overcome limitations.