After you file

Print, sign, date and mail the tax return to the IRS assuming you amended the federal tax return and followed the instructions for amending a return as shown in this TurboTax support FAQ when using the online editions for tax year 2018  - https://ttlc.intuit.com/community/amending/help/how-do-i-amend-my-turbotax-online-return/00/27577