I am an Instructional Designer and writer, as well as a graphic designer. I am really enjoying the Editors on my team right now and decided to let them know this by turning some of their editorial comments and gentle reminders into hand lettered posters. Here is the first one.
Compounds formed with prefixes are spelled closed [i.e without a dash – took me a bit to figure that out] unless they create double identical vowels or triple identical consonants. – Helen O’Guinn
This one spoke to me for 2 reasons: I was curious as to why they removed some dashes and not others in my documents, and then it took me some puzzling to figure out what Helen was trying to tell me here. When the aha moment happened, I knew it was worthy of it’s own wall space.
Flexing My Wings 
Pretty lettering! I need an example of that rule, my brain is drawing a blank on any words that would fit it!
Hahaha… oh my. There were a bazillion in the documents (which I did not write, I was simply cleaning them up.) I will give you some tomorrow. My head is dead tonight.