To make this rug first you have to mark a line on one edge of cardboard. Do the same to the other edge. After that make cuts on both the sides and take care that every cut should be in line with the cut on the other end.
Put one end of the yarn in the first cut and stretch it to the first cut at the other end. In this way cover whole of the cardboard. Now start weaving by threading a big needle with yarn.
Once you finish every string of weaving you can use a fork to bring it to place and tighten. Finish the rug and you can change colors too while weaving.
You can try making it in as many colors as you want.
We have found another smashing idea for you with which you can weave a rug out of old t-shirts using the same technique. Enjoy crafting!