Unfortunately the choice of font in the example you posted makes the diagram harder to read than it needs to be. Legibility has been sacrificed to achieve the h

Unfortunately the choice of font in the example you posted makes the diagram harder to read than it needs to be. Legibility has been sacrificed to achieve the hand-written look (a font that's less cursive in style might have been okay). Not a good trade-off IMO. Other than that I like how it looks.