Insert the horizonline and groung line.

Locate the leading edge and the two vanishing points.

Join the leading edge back to the two vanishing points and draw in the two sides.

Complete the box in perspective by joining the top edges back to the vanishing points.

On the front face draw diagonals from corner to corner to find the centre.

Join the centre back to VPL and extend on to find two points as shown. Drop a vertical line through the centre to get the other two points.

From the four points that have been located draw a freehand circle.

The construction is repeated for each side.

Again the four points are used to construct the right-hand circle.

Again the same construction is used for the top of the cube.

Again use the four points to construct the top circle in perspective.