I have posters on the wall. I have many of them. They have rock stars on them. The wall is above my bed. I live in the college dormitory.(combine sentence)

I have posters on the wall. I have many of them. They have rock stars on them. The wall is above my bed. I live in the college dormitory.(combine sentence)

I live in the college dormitory having many of rock stars' posters on the wall above my bed.