If you have already filed your returns and they have been Accepted, you will need to wait until the IRS fully processes your return and you receive your refund.
Next, you can Amend your Tax Return by filing Form 1040-X to make any corrections to your original return.
You can click here for instructions on Amending your tax return: How to Change a Tax Return You Already Filed. TurboTax will walk you through Amending your State Tax as well.