Can you clarify your question please so we can assist you?
Did you already complete and file your tax return, but later discovered you had additional information to report?
If so, you will need to prepare an amended return to reflect the additional information. The amended return will reflect all of your income/deductions as corrected and will only reflect the changes to your corrected return from your original return. Essentially, you will only get a refund or pay the difference between the original return and the corrected return.
Tips for filing an amended return
Please see the link below for more details.
Steps for amending a tax return