Giant Sofa Backstage

Now here's a fun idea! So the plan is to make a giant sofa, so big its at least double size! Here are my sketches: A four person, 3 meter wide version: https://sketchfab.com/models/4bfebbe833664273aa3e69fa1b9d1f86 The six person version (my fave) https://sketchfab.com/models/8ec85117a90546c8a47ffd76000569ca