There is more than one way to draw a cube. If you would like to show perspective and space then you need to use axonometric projection. One way of portraying the three dimensionality of objects is to use axonometric projection.
One very popular way of drawing a cube is by using dimetric projection, Cavalier projection.
“Cavalier projection is a special, oblique axonometric projection. It particularity comes from the fact that the front view of the depicted solid appears to be its true size. The reason for this is that the YZ coordinate plane and therefore the Y and Z axes come together on the axonometric projected plane. Therefore, there is no foreshortening in these two directions, the foreshortening value is 1. In the direction of the x axis, the value of the foreshortening is 1⁄2. The image of the X axis makes an angle of 45° with the horizontal.” (The original Hungarian text)
Drawing a Cube with Cavalier Projection
You can create a cube like this with shapes. Cut out a square and two parallelograms from the stencils.
Another popular way of drawing a cube is isometric projection. Isometric projection, “is an axonometric projection in which the three coordinate axes appear equally foreshortened and the angle between any two of them is 120 degrees.”
When drawing a cube you can see that each side of it looks like a rhombus. Try putting together a cube with axonometric projection using three rhombuses.
Victor Vasarely often used cubes in his compositions. He wrote,
“At the time I bought an old farmhouse near Gordes. In one of the rooms on the ground floor there was a window which could have measured about 30 cm. The walls were incredibly thick in that area of the country, so the window was much narrower than it was deep. When I looked at the window from inside the room, it resembled a cube and I felt bewitched because the shape of the cube changed as the sun’s rays changed, it became deformed, contracted, expanded. The axonometric projected cube moved, it vibrated, it spoke an eloquent language to me, and yet it was the simplest phenomenon imaginable. If I was outside, on the other hand,, my cube took on impenetrable depth. This time it was black, but the earlier spell played out before my very eyes. (In Jean-Louis Ferrier: Négyszemközt Victor Vasarelyvel, Budapest: Kossuth Nyomda, 1982, p. 32.)