What the Heck is Ox Gall?
5:34
Understanding mediums | Gum Arabic and Ox Gall Liquid | Winsor & Newton
15:43
The Story of My Favorite Color
1:32:56
Playing with Mediums in Watercolor
16:24
A Controlled Look at Winsor & Newton Ox Gall Liquid & QoR Synthetic Ox Gall
13:03
It's Time to Paint Something Bright!
44:01
STILL LIFE - How to Paint LIGHT using TONAL VALUES!
15:48
QOR vs ONETZ (ox gall) - fun watercolours
10:20