Use the old clothes and cut out stripes, then put 2 of them together and make a knot, then, you twist the one farthest from you and pull it towards you, you do it over and over again, until you are left with about 5cm, then you make a knot again and you are done with the twisted fabric part.
Make the flower vase by using the plastic bottle and then cut the bottle into halves or 3/1, then use the side where you have no lid. Then cut lines onto the bottle for about 5-6 coms, and then you fold the lines out of the bottle, then you fold the lines toward the inside of the bottle about half of the line that was folded outside. And you are done with the flower vase part.
Lastly, you glue the fabric onto the outside of the bottle and you are done!