How To Write A Harry Potter Letter . Different fonts were used on the harry potter book covers, for its chapter title and elsewhere. The hogwarts letter for 11 year olds. Make a custom harry potter hogwarts acceptance letter by Keyur12 Fiverr from www.fiverr.com Thanks for taking the quiz! We await your owl by no later than 31 july. Tape the 2 sides to the bottom flap, and the you have an envelope!