Example of an informal letter

2nd May Dear John(,) Thanks for your last letter and the nice photos................ ..................................................................................................................... Sorry, but I have to finish. Hope to hear from you again. Take care, Peter

tips: 

- the date: top right hand corner (day/month-BE - or month/day-AE)

- comma after name not necessary, but begin after that with a CAPITAL letter

- ending: Take care, Cheers, Yours, Love, then a comma and your name

http://www.englisch-hilfen.de/en/words/letters.htm