I saw this and this some time last week and I had to give it a go.
I grabbed one of my Dad's old shirts, cut it up into sections and spread flour paste (just flour and water) over the top.I drew into the paste with a sharp tool and let it dry. Once it was dry I scrunched the fabric up (creating cracks in the surface) and then painted watery acrylic paint over the top.
This first piece was just plain flour paste with no drawing. I just cracked the flour paste and painted it.
There's still a little flour paste on the fabric (even after a long soak and a rinse and spin in the washing machine) so I need to give it another wash.
A close up of the cracks.
I'm pretty impressed with how soft the fabric is after having acrylic paint applied to it - it never occurred to me before to use acrylic on fabric - now I have all these ideas for painting on fabric.
I drew little sun shapes into this piece (below). It ended up being the least successful one. Not sure why.
This sample (below) was my favourite. I drew little scribbly circles into the surface.
And a close up:
Not entirely sure what I'm going to use these for but I enjoyed making them. Next time I want to try working on top of coloured fabric.