1. Cut the plywood into a rectangle.
1 piece of wood : size 60 × 50 cm to use to make the back of the box.
1 piece of wood : size 60 × 60 cm to use to make the top of the box.
1 piece of wood : size 60 × 60 cm to use to make the base of the box.
1 piece of wood : size 60 × 30 cm .And then drill into the circle 2 circle for as channel to put feet.