Art is a Process – One step at a time and keep going! Art Lesson Demonstration: Oil Painting Process This painting is a “diptych”: a picture or series of pictures painted on two surfaces. Step 1 of 3 Sketch with pencil and paint the background. Step 2 of 3 Start laying in base colors. Step 3 of 3 Finish with detail. View Art Lesson Details Sign-Up for Art Lessons Today!