I think I may have messed up trying to do an amendment on my 2016 taxes. I filed then the very next day I got another W2 I forgot about. I entered the new info, unfortunately without reading the instructions on how to do the amendment, and went all the way to the end of the questions etc. I have already gotten my original return but now don't know if I messed everything up online and really don't know if I have done what needs to be done before printing and mailing the amendment. Please help!