I DO NOT recommend buying the Darice Value Pack (Wood Box Set of 2) that is ready to paint and decorate from Michaels. I noticed that the boxes are made from several different types of wood and knew that this would be a challenge to wood burn on. It was! Because of the grains of the different wood, the wood burning tool did not go over some of the wood smoothly causing severe burn spots, indentations and most of the time bumpy (very bumpy) burn lines.
As you can see from my image, it is not smooth. I became very frustrated while wood burning. I finally gave up and did not burn anything else into the box and just went ahead and painted the box with water downed acryllics and prismacolor pencils.
This Mermaid will definately be redone on a different box with proper wood to use for smooth, clean wood burning. (Meaning, I'm going to do some research and find the best recommended wood to use the fabulous wood burning tool.)