How to open the hand-drawn artistic strokes, both positive and negative, smooth and meticulous?

Any pen will keep up with the owner's habits after a period of use, so the newly bought pen is not the best pen, but the best pen is the highest peak of the pen and will soon slide to the bottom. Art pen is made of metal, so it will take a long time to use. As long as your work accumulates in quantity, you can finish writing.