Select, measure and cut out your fabrics. You will need the below measurements:
Large
4 x Outer 27cm (width) x 21cm (height) rectangles
1 x Outer 27cm x 27cm square
4 x Inner 27cm (width) x 21cm (height) rectangles
1 x Inner 27cm x 27cm square
Medium:
4 x Outer 16cm (width) x 22cm (height) rectangles
1 x Outer 16cm x 16cm square
4 x Inner 16cm (width) x 22cm (height) rectangles
1 x Inner 16cm x 16cm square
Small
4 x Outer 13.5cm (width) x 19cm (height) rectangles
1 x Outer 13.5cm x 13.5cm square
4 x Inner 13.5cm (width) x 19cm (height) rectangles
1 x Inner 13.5cm x 13.5cm square