Gather your supplies:
Sewing machine and general sewing supplies
Matching sewing thread
Scraps of denim in various shades
Air or water erasable pen
White-stranded embroidery cotton and embroidery needle
From denim, cut 2 squares 20 x 20cm. From wadding, cut 1 square 18 x 18cm. Place 1 denim square right side up. Lay wadding on top, centred. Place second denim square over wadding, wrong side up. Pin together. Stitch around edges, 1.5cm from edge, leaving an opening for turning through. Clip corners. Turn through.
To make hanging loop, from denim, cut a 4cm-wide strip. Fold each long side to centre. Fold in half. Press and topstitch 2mm from edge to make a neat strip. Cut to 8cm. Stitch each end in place to attach hanging loop at corner.
Cut scraps of denim into squares and rectangles and arrange on square. Beginning with bottom most layer, following instructions on pack, use a dry iron and Vliesofix to fuse denim pieces to square.
Rule a series of parallel lines on square with erasable pen. Using running stitch and 2 strands of embroidery thread, stitch square as pictured, working through the top layers of denim only.