My living room is big.
In my living room, there's a TV, a sofa and a piano, too.
I usually stay in the living room with my mom and dad.

Bella: My livingroom is big.
Correct: My living room is big.

Bella: I have a living room with TV.
The living room has a sofa, too.
And I have a piano.
Correct: In my living room, there's a TV, a sofa and a piano, too.

Bella: I'm living with Mom and Dad in the living room.
Correct: I usually stay in the living room with my mom and dad.

Hello Bella!

Good job, I just made some corrections.
I will explain in class..

See you on Wednesday, Bella!

T. Melody~