When drawing letterforms, it’s necessary to pick a size of the letter. Pick a pen and draw an ‘A’, the size of the letter relates the thickness of pen stroke and the size of your hand.
Size matters in letter because viewers are affected by distance. Big letter is visible enough when it’s shown in far distance and small letters at closer in comparison. Intentionally type-drawer have a size of their letter in mind, to maintain the quality of legibility based on a premise of a unchangeable distance between eyes and the letter.
It’s fresh that we imagine to downsize the letter size in, let’s say, 1 point and see how writer can react within the restriction. Aiming to write a letter in smallest size, people admire a delicate sense of hand finger while holding a pen.