DIY Piano Cover/Sewing tutoring

Material: Outer Fabric(Satin) : 62 inch(157.5cm) x 15 inch(38.1cm)
Pellon 971F :62inch(157.5cm) x 15inch(38.1cm)
Inner Fabric(Cotton) : 62inch(157.5cm) x 15inch(38.1cm)
Bias : 3inch(7.62cm) x 170inch(431.8cm)
Lace : 6inch(15.24cm) x 100inch(254cm)
Quilting stitch spacing : 1inch(2.54cm)