Hello. It is (ton nom) who write you this letter. I wanted to tell you that I miss you too much and without you I me troubles. I am hospitalized because I am sick, I am not too much a sick person, I wanted written this letter for you.
Ensuite, tu écris à propos de la nourriture, les activités ect.., il n'y a a que toi qui y puisses compléter. Bon courage!