Choose 0.7 or 1 for the artistic pen.
Select 1. And 1 art brush lines are thicker, which is more suitable for writing big characters and signing. Tough strokes can produce thicker lines, making the handwriting more striking and powerful. 0.7 Art brush has thin lines, which is more suitable for writing fine print and notes, and can't highlight handwriting, so 1 Art brush is selected.