Моя семья состоит из пяти человек. мама, папа, брат, бабушка и я. моего брата зовут никита. мою маму зовут ирина. моего папу зовут олег. мою бабушку зовут валентина.

My family consists of five people: Mum, Dad, my brother, grandmother and me. My brother's name is Nikita. My mother's name is Irina. My dad's name is Oleg. My grandmother's name is Valentina. We live very friendly.
( Можно начать: My family is not very big. There are 5 of us: Mum, Dad, my brother, grandmother and me. My brother's name is Nikita. My mother's name is Irina. My dad's name is Oleg. My grandmother's name is Valentina.)