This Video tutorial is about creating modeling of cardboard
Cardborad – For this purpose we go to basic primitive menu and select box. Now we have simple box in our prospective view. Adjust its modification setting in modifier menu. After new setting the box will be change in shape.
The next step is to just right click on the box and select editable poly. There will be polygons option below in the editable poly. Now select upper side of our box and chose insert option and write 2 in the mini box there. The next step is to extrude the polygons. The polygon extrude option will be on right hand of the image. Select that option and adjust the extruding setting as much you need but for extruding purpose we mostly take negative value. So write the value in negative. This will make the box like 3d box. Select the polygon and extrude it. Similarly do the same case with the other sides of the box. Although our box is ready yet its vertices setting left. We start from top view port and select its vertices. Then go into the prospective view. Select the right vertices and move it toward Y-axis and then left axis toward Z-axis to downward.
Now we go to left view port and do the same thing with other two vertices. Select the skylight and adjust it according to your need. Now rotate the faces of sky light also can adjust light color and setting. Now we have simple Cardboard.