After you file

The only way to change your status is to write a statement to that effect in 1040-X Part III Explanation.

Describe your new status.

If any amounts changed you have to attach new or changed forms or schedules.

Do not include your old 1040 nor your revised 1040 because the Form 1040-X reflects any changes there and becomes your new tax return.

If no dollar amounts are changing, you can leave 1040-X lines 1-23 EMPTY.

@lmrk