How do i make sure my return is correct

If you are finished entering all of your information, choose the Review tab from the menu on the left to calculate the amount TurboTax has calculated for your refund or amount due.

I also recommend that you view your Tax Summary which will summarize your income, taxes, and payments/withholding so you can better understand the calculation of the refund or amount due. 

To view the tax summary, from the menu on the left, choose Tools/Tax Tools/View Tax Summary.  The State tax Summary will be just above the Federal Tax Summary in the black menu area.  

Please see this link for more details:   View my Tax Summary

If you are not satisfied with the results, you can go back through the entries and questions on each section of the return, or consider upgrading the LIVE version of TurboTax.  This is available in the Online Version and will give you access to CPAs/EAs that can review your return with you, or even do a LINE BY LINE review on your return and File your return for you.