I tested four sets of colouring pencils using three reference images:

• Top left: Prismacolor & Karismacolor pencils

• Top right: Faber-Castell Polychromos

• Bottom left: Derwent Watercolour

• Bottom right: Derwent Inktense

For each set, I marked the drawing areas with low-tack tape. I then drew the reference images freehand and coloured them in using the respective pencils. My goal was to explore the properties of each set. To avoid bias, I covered completed sketches so I was always drawing the original image, not referencing my previous work.

I don’t have exactly the same colour pencils in each set, so the colours vary.