It's fun to just do personal work regularly. The kind of work where it doesn't matter whether anyone likes it, and it's just enough I see something interesting in it. Found this loose drawing in my discard pile drawn randomly with an ink brush. I painted the colours with poster colour on a forgotten tracing paper lying around, took a picture of it with my iPhone and and combined it in photoshop. I've used this technique for work it worked out pretty well because I could adjust the paint layer and line layer separately. Yet both are done in natural media. Try it!