I see that we are always our own worst critics.
I spent years in quality control. This position consists of writing down discrepancies of fact or opinion.
I didn't concern myself with my hand writing being pretty or neat. Honestly, I think it's quite vain. Although I see the need if it's being published and for monetary reasons. Like a book or article of some sort.
I focused on being legible, easy to read and understand. To the point.