1.First of all I sewed a 1.5sm seam allowance all round four sides leaving one to allow me to bag it out.
2. I repeated the same process measuring 90cm but I thought I wuld vary the size so I alternatively changed the width of one piece of fabric so they were different.
Then I slashed up the centre of each of the 1.5cm edges after notching all the corners. This would be able to reduce bulk which I don't want due to the volume created by the inverted pleats.
This is what the inner layer looks like before bagging it to created the draped fabric that acts as a bandage on my skirt significant to mental health.