I posted the chair before. Now I have the couch and chair together.
I am very happy how it all worked out I even made an ottoman.
The only thing I changed on the seats was the amount
of stuffing on the cushions and I did not do any piping.
The first time I made the chair (posted) my resin people couln't sit properly.
so I reduced the "stuffing" layers to 2 instead of three layers.
The tut is for an upholster chair I used the same patter but elongated or enlarged some
pattern pieces it to make a couch or as some say "sofa"
This tutorial can be found here: Kris has fantasic tuts and easy to follow!