You're amazing would be "Olet ihmeellinen".
If you want to say You are unbelievable, then that would be "Olet uskomaton".
Olet uskomaton/ihmeellinen.
Kaikista hämmästyttävin Asia. The most = kaikista amazing = hämmästyttävin / ihmeellisin / erinomaisin thing = Asia
For you is sinulle in Finnish.
How is miten in Finnish.
I am not Finnish. - (Minä) en ole suomalainen.
Finnish legend in Finnish is "suomalainen legenda".
Yes is "kyllä" in Finnish.
Boring is tylsä in Finnish.
Daughter is tytär in Finnish.
Black is musta in Finnish.
Food is ruoka in Finnish.
Library is kirjasto in Finnish.