Your composition is perfect except for a few mistakes. ✬

Except for Tom, the family was all watching TV in silence. ✬

The room was empty except for a shabby bed. ✬

The house was empty except for a cat. ✬

I work every day except for Sundays. ✬

Except for one person, everybody went home. ✬

Everyone was invited, except for me. ✬

Except for the weather, it was a fun picnic. ✬

Except for the weather, it was a great picnic. ✬

Except for a few minor mistakes, your writing is good. ✬