Tell him how you feel, but be sure not to go overboard. You have to remember that *everyone* has a comfort level. If someone gives them a letter that sounds obsessive, it's bound to scare them. xD So when you write about it, ask yourself if you'd be comfortable getting the same kind of letter. But definitely tell him that you like him, why you like him, etc.
write a short cute letter. but dont weird them out with a long letter saying things too "over obsessive" maybe tell them you like them a lot and we should hang out. good luck!! :)
Use satire... I wouldn't reccomend it but if your crush catches on the humor, then evidently, it's almost awe inspiring :)
Spray perfume on it Write neatly Poetic form is romantico
Tell him what you like about him :) what he does to make you smile
Spray perfume on it
Poetic form is romantico
Be truthful, and be yourself.