edit only the grey upholstered parts of the sofa seat and backrest backrest grey vertical cushions behind remove the vertical division between left and right backrest cushions merge them into one single continuous backrest cushion no vertical seams no splits no gaps seat grey horizontal cushion you sit on remove the division between left and right seat cushions merge into one single continuous seat cushion no seams no separation lines important keep the sofa base structure unchanged do not modify the frame legs or proportions do not change fabric color or texture surface smooth the areas where seams were removed so they look continuous keep soft natural folds and slight fabric irregularity edges slightly rounded not rigid strict only one backrest cushion only one seat cushion no visible divisions anywhere goal a clean continuous sofa with a single backrest cushion and a single seat cushion minimal and seamless
