After you file

Patience is your friend now.  The 1040-X form you need for an amended return WILL NOT be available until mid-February.  AND, you must PRINT and MAIL it, and allow 2-4 months for it to be processed.

 

Also, when mailing a printed return it is always a good idea to go to the Post Office and mail it 'Certified' with 'Return Receipt'.  That way you will have proof that they received it and when it was received.