I had done this horse as a pencil sketch a long time ago, and now I wanted to try out coloring the sketch with gouache and markers. So I printed out the sketch, put it on my lighttable and transfered the drawing to a DIN4 sheet of watercolour paper.
There were some colours left in my palette, one of them was red. Very carefully I added some drops of water from my brush to the dry paint, and then painted the horse. There was also some green left, and as complimentary colours mixed together result in a kind of grey, I mixed my red and my green together in order to get a darker colour for the shading.
Regarding the mane I first applied a layer of golden yellow with gouache. Then I grabbed all my orange and brown markers – some copics, some not – and did a second layer with markers.