i Agree with John. Take a class. You will see that there are other things that are different too, and might need some attention.
anyhow, Trim body and Trim sheet will not trim 2 sheets to a common edge, They will trim one object at a time.
( Trim body can trim multiple objects to a common target in one feature.)
the "Trim and Extend" with the suboption "make corner" will trim 2 sheet to a common edge.
The "Combine" feature will trim multiple sheets into a single sheet body producing multiple new edges.
Regards,
Tomas