How To Write A Informal Letter To Your Friend . Tell your friend what reminded you of them recently. Always end on a positive note, no matter what is expressed throughout the letter. Informal Letter Example To A Friend Writing Letter from juwritingletterformat.blogspot.com You already are aware, that i have a tight and strenuous schedule managing everything at the __________ (hostel/school/college). In this explore the different formats of informal letters. Your friend is thinking about learning to drive and would like some advice.