How to write a letter to someone you like?

If you are shy and can't face saying it to his face than writing a letter is a good option. Don't sound to desperate and keep it simple. Just get straight to the point and tell him you like him and why, for example, you like his smile or his sense of humour and then give it to him, smile and walk of. He should either come and talk to you about it and in the end you will probably have to talk about your feelings to his face anyway, but if he writes a letter back than that's great! Good luck =]