First: Determined cat insists on sitting on shoulder, human takes photo.
Second: Layer photos using app on phone.
Third: Apply filter.
Fourth & Fifth: Repeat second and third steps.
First, leaves bundled around a tin can.
Second, walnut vat.
Third, indigo.
Fabric: silk/linen
First: a stain, probably olive oil.
Second: leaf bundle.
Third: hammer fresh indigo leaves on to fabric.
Fourth: walnut vat.
Fifth: Indigo vat.
Fabric: Cotton