State tax filing

1) Yes, TurboTax is programmed to include the annual updates to each state return's filing instructions, including any required attachments from the federal return. If your circumstance requires federal forms be attached to the state, the software can take care of that for you. 

2) The PDF printed copy of the state tax return will include any federal attachments behind the last page of the state return, or in the specific order described in the state filing instructions. 

3) To verify your state return document includes any necessary federal forms before you file (after paying):

1. Open or continue your return.
2. Enter your return by selecting Continue or Start on Tax Home.
3. Select Tax Tools from the menu, then Print Center (on mobile devices, tap in the upper left corner to expand the menu).
4. Select Print, save, or preview this year's return, and follow any additional instructions.
5. Once your PDF opens in Adobe Acrobat Reader, select the printer icon.
6. Make any adjustments in the Print window and then select Print.

Then once the state tax return is accepted, you'll have already reviewed your submission for completeness. 

Reference: Can I print a copy of my return in TurboTax Online before I file it? | How do I save my return as a PDF in TurboTax Desktop?