Here I laid multiple layers of colours on a surface and once it dried I proceeded to scratch it away. The deeper I went the brighter the colour. It's a bit of a tiresome work to do, my hand hurt by the end of it because of the pressure I had to maintain on the knife with each stroke.

Had a ton of fun with this one :)

More: https://www.weasyl.com/submission/982591/most-intimate-of-moments
https://www.weasyl.com/submission/981593/in-trance
https://www.weasyl.com/submission/986764/do-you-feel-welcome
https://www.weasyl.com/submission/982593/mother-s-touch
https://www.weasyl.com/submission/988622/trust
https://www.weasyl.com/submission/1065514/tiger-pair