After you file

If you are not currently using the downloaded 2021 program where you have the ability to print just the forms to mail  and you are working from a PDF file that includes all the worksheets then use the PDF printer to select the pages you need.   Start with the form 1040 then all the form/schedules that have a filing sequence number in the upper right hand corner plus any overflow statements if any.  Do not send any worksheets.