I always repair my bike myself.
Do you also repair your bike yourself?
Mr West (He) washes his car himself.
She made this shelf herself.
We`ve decorated this room ourselves.
Susan and Julia did you make these cupboards yourselves?
They painted the walls themselves.

What will happen if...?
If you use light paint, your room will be lighter.
If you paint an old hoe box, you`ll have a nice box for your letters.
If you use a large mirror, your room won`t be so dark.