You will need to print and sign your Colorado return.
Go to Tax Tools in the left column, then choose Print Center. TurboTax will give you the option to print the forms you need to file your state return.
Follow the instructions to sign the main form, then include all pages with your payment check. We recommend sending your return by a method that provides tracking and/or confirmation of receipt. The state return filing instructions should have the address where the return should be mailed.
For more help, see How do I file my return by mail?