Are letters cringe for you guys?

I've always loved to do letters, mostly for the people I loved romantically or had a relationship with before. Now, I'm starting to like my friend, and I wanted to do a letter for him, not to confess but to express how much I appreciate him.

So my question is, would you guys consider that cheesy? Or what do you think would be the best to write in a letter so it doesn't end up being cringe?