I created a botanical illustration of a rose using a limited palette of four coloured pencils over three half-days, with each session being approximately three hours of planning and drawing.

From left to right:

• Day 1: Cherry 0510 and Iron Green 1310 Derwent Inktense watercolour pencils used dry.

• Day 2: Cherry 0510 Derwent Inktense pencil and a Yellow 916 Karisma pencil (wax-based with a soft core - good for blending).

• Day 3: Dark Red 225 Faber-Castell Polychromos pencil (oil-based with a hard core - ideal for fine detail).