When you sign onto your online account and land on the Tax Home web page, scroll down and click on Add a state. See screenshot
This will take you back to the 2018 online tax return.
Click on Tax Tools on the left side of the online program screen. Then click on Print Center. Then click on Print, save or preview this year's return. Choose the option Include government and TurboTax worksheets
Note that the Federal tax return Form 1040 for tax year 2018 is two half pages. The program prints out one page combining the two halves. There are 6 new Form 1040 Schedules, numbered 1 thru 6, for tax year 2018.
IRS Form 1040 - https://www.irs.gov/pub/irs-pdf/f1040.pdf