Art crossword

12345678
Across
  1. 2. Drawing without aid or tracing
  2. 4. Smooth or gradual transition
  3. 7. Outdoor scene
  4. 8. A painting completed on three separate panels
Down
  1. 1. Term meaning lightness or darkness of a colour
  2. 3. Often referred to as colour
  3. 5. Applying thick layers of paint
  4. 6. Cloth surface for painting