INTERNATIONAL STUDENTS recommendation letters from teachers

Hi! I write this post as an urgent request for help to everyone who may give ANY kind of advice about my situation. I am an international student from Italy and I have just found three teachers to write recommendation letters for Undergraduate applications. However, as it is their first time writing a recommendation letter, they have asked me if there is anything in particular they should emphasize, or something they should not forget to write about. I have to answer that in a couple of days in order to give them enough time to write the letters. Can anyone help me?