How do i print a copy of my completed return before filing it

You must pay the TT fees first.

To pay the TurboTax online account fees by credit card, click on My Account at the top of the online program screen.  Then click on Print Center.  Then click on Print, save or preview this year's return.  On the next page, to pay by credit card, click Continue.  On the next screen just click on the Continue button.  The next screen will ask for all your credit card information so you can pay for the account.

And you better hurry to finish it and print.  Online is only open until Nov 15.  And it is too late to efile, you now have to print and mail it.