1. Cut an exact square (huge enough, at least one foot square) out of the trash bag. 2. Make four holes, perpendicular and at equal distances on the plastic cup. 3. Cut four holes from the four corners of the square. Make sure that all of the holes are equal distances from their surrounding edges. 4. Tie one end of one of the strings to a hole in the cup, and the other end to a hole in the corner of the parachute. You can label each side of the cup and each corner of the parachute to make sure that the strings all go to the correct sides. 5. Repeat step 4 until every corner is tied. Also make sure that there are no twists or tangles in the strings. If there are, untie one string and take out the tangle. 6. Try it out. After the parachute is finished, you could go upstairs to the veranda or balcony, and drop it to see your creation at work! You can put an egg into the cup as passengers! After dropping it, you could rush downstairs or to the yard to see where and how the parachute has landed. Enjoy! Tips: If the egg you put into the plastic cup breaks, cut another bigger square and lengthen the strings to make a better parachute. Other Answers (3) make the garbage bags into a parachute you can cut them into a square and punch holes in each corner of the garbage