Making this functioning, miniature Sofa Bed

This miniature has an extendable base that allows it to make down into a bed! Cutting Instructions for the Sofabed From 3/32” (2.5mm) plywood Piece Quantity Imperial Metric Name A 2 6 ¼” x ⅜” 159 x 10mm Expandable bed frame B 1 5 ½” x ⅜” 139 x 10mm Expandable bed frame C 2 2 ½” x ⅜” 63 x 10mm Expandable bed frame D 2 2 ¾” x ⅜” 51 x 10mm Expandable bed frame E 1 6 ¼” x ⅜” 159 x 10mm Expandable bed frame F 1 6 ⅛” x ¾” 157 x 19mm Front of the couch H 1 6 ¼” x 1 ¼” 159 x 31.5mm Back of the couch (There is no piece G) ¼” Foam board I 2 6 ⅛” x 2” 156 x 51mm Back rest J 2 6 ⅛” x 2 ½” 156 x 64mm Seat K 4 3” x 1 ⅞” 77 x 43mm Arm rests Batting (optional) Fabric for upholstery (fabric placemats work well) Fun_and_Craft Sofa Bed:    • DIY miniature Pull Out Couch / Convertable...