If you want to investigate the world of faux marbling further, here are some links to websites that you may find interesting:

http://pierrefinkelstein.com/  – Pierre Finkelstein (the author of ‘The Art of Faux’) runs this blog with posts featuring tutorials, materials, brushes and Pierre’s own adventures around the globe in search of faux finishing! He also regularly responds to questions, so if you need an answer from an expert he’s the man! You can also buy brushes and books from his website: http://www.fauxbrushes.com/mm5/merchant.mvc

You can find him on Instagram @pgfinkel  or on YouTube @pierrefinkelstein