Marnie Ross is well known for being the founder of the Little Things Art prize that is celebrating its 8th year - go check it out it is is currently (opens 14th September 2022) on show at https://saintcloche.com
You can find out more about Marnie and the Little Things Art prize on her website
http://www.marnierossartist.com
The medium Marnie talks about is from Matisse - https://www.matisse.com.au/mm20-water-based-patina