Step by Step Tutorial.
1. Start by randomly drawing lines on card stock here I have used River Rock by Stampin UP.
2. Once Finished with the Stripes add shading in the form of a Z so some sides are light and some dark for added dimention..
3. Now you can add random dots by tapping the marker all over the images.. here you will start to see the finished product, you can decide to go deeper on the shading if you like.