"to straighten up" in Spanish

CONTEXT EXAMPLES
Context examples for "to straighten up" in Spanish(!) These sentences come from external sources & may not be accurate. Therefore, we are not responsible for their content.
don't be a slob, straighten up this room a bit
no seas abandonado y pon un poco de orden en esta habitación
straighten your room up a little
pon un poco de orden en la habitación
I'd better straighten myself up a bit
más vale que me arregle un poco
straighten up your shoulders!
¡ponte derecho!