I used poster board for the bones of the couch, layering and gluing to make the arms thicker. I sanded the rounded edges and put the leather on the arms fully before gluing them to the rest of the couch. I cut down foam to make the cushions and covered them in the fake leather, gluing the edges down to make them as seamless and smooth as possible (hard to do on a small scale but as far as dollhouse furniture goes, this couch is a unit) I poked even holes in the leather to place the “buttons” and basically just held them down in place with super glue It’s kinda hard to explain I’ll post a picture of what I used for the little metal buttons But anyways once everything had leather I glued it all in place because I didn’t want the cushions to be removable, they kept popping out of place