I tried to do a feather string pull on a white base mixed with polyurethane satin varnish, but I didn't like it (maybe I should leave it ;) ). So I swipe it and did some balloon dips. I kind of like the result, so I decided to keep this one. 
I mixed my paints with my pouring medium:
- 4 parts pva craft glue
- 4 parts acrylic primer
- 2 parts acrylic binder
My mixing ratio is 1 part paint to 2 - 3 parts pouring medium and water to consistency. 
For the white base I mixed my pouring medium with titanium white and polyurethane satin varnish in 10:1 ratio.
https://youtu.be/IGcu0XDw4Lw