How to Fold (And Throw) Your Own Paper Star

• Use square origami paper, or fold and cut a piece of rectangular paper into a square.
• Cut or tear the square into 2 identical rectangles to make both pieces of the ninja star.
• Perform opposite folds on both papers, so that you have two Z-shaped pieces that are mirror images of each other.
• Decorate your ninja star with markers to personalize it.

Preparing Your Paper

Find a piece of square paper. Origami paper works best and is easier to fold, but you can also use a piece of computer or A4 paper cut to size. Choose origami paper according to what color you’d like your ninja star to be. You can make a 2-colored star with 2 different colors of paper if you'd like. To make square paper, lay your rectangular paper in a flat, horizontal position. Take one corner of the paper and fold it over until it meets the opposite edge, forming a triangle, with a rectangular strip left over. Remove the rectangular portion of the paper by tearing or cutting it away with scissors. You only need 1 piece of square paper for this project, but throughout, we'll use 2 sheets with 2 different colors, as this will help make the process clearer as we go. You can follow along using 2 sheets, or feel free to just perform steps 1-3 on one piece of square paper.

Fold your square paper in half to form a rectangle. Press down on the fold to make a strong crease. Then, unfold the paper. This is called a “valley fold,” which is when your fold creates a "valley" with its crease. If you are using paper that has one colored side, start with the color side facing down. If you are using a single square sheet, draw an “O” on one (which will correspond with our “orange” sheet above), then a “B” on the other (which will go with the “blue” sheet) to help you differentiate as you follow the tutorial.

Cut or tear along the creases to make 2 rectangles. Whether you started with 2 papers or 1, at this point, going forward, you'll just need 2 rectangular pieces of paper. These pieces will eventually be folded together to make the throwing star. We use 2 different color rectangles to make things clearer for you, but you can use rectangles of the same color if you'd like!

Making the Ninja Star

Fold the rectangles in half on a vertical crease (hot dog style). This is called a “book fold.” If you’re using computer paper and want to make a smaller ninja star, you can shorten your folded rectangles by cutting or tearing part of the paper off, but keep in mind that the longer your rectangles, the easier the ninja star will be to make. Make sure that both folded pieces of paper are the same length.

Fold the papers in half on horizontal creases (hamburger style), then unfold. Be sure to only unfold the horizontal crease you just made! We’ll use this crease as a guideline, making the next folds easier. You should now have 2 folded rectangles with a valley fold running horizontally in the center of each.

Cross-fold your rectangles along the horizontal crease you just made. Take the right half of your blue (“B”) piece of paper, and fold it so that the right edge is facing down, with the top edge now running along the center crease. Fold the left side of the paper in the opposite direction, upwards. Take the right half of your orange (“O”) piece of paper, and fold it so that the right edge is facing up, with the bottom edge now running along the center crease. Fold the left side of the paper in the opposite direction, downwards. If done correctly, you will have two mirroring “Z” shaped pieces of paper.

Flip both pieces of paper over. The folds you just created will now be facing down. Position the pieces of paper so that they lie on your worktop in the same way as in the above image

Fold the top squares of both pieces of paper inward to form a triangle. On each piece of paper, take the top right corner of the top square, and fold inward on a diagonal to make a triangle. The folded edge should align with the crease you made in Step 2.

Fold the bottom squares to create a triangle. Take the bottom left corner of each bottom square, and fold along the diagonal, inwards and toward the center of the paper. Just like in the last step, the folded edge should now align with the crease you made in Step 2. Your 2 pieces of paper should be mirror images of each other.

Fold the left triangle of both papers inward. Fold the left triangles inward along the center crease so that the tips are flush with the sides of the papers, as well as with the folded corner on the opposite end–which creates a parallelogram shape.

Fold the right triangle of both figures in. Repeat the previous step, but with the triangles on the right this time, folding them so that they lay flat over the center shape, so that your 2 pieces of paper are now 2 parallelograms.

Flip the orange paper over. The blue piece of paper will now have the triangular flaps facing upwards while the orange piece will have the flaps facing downwards. The pieces are still mirror images of each other.

Open the flaps of both pieces of paper and layer them over each other. Unfold both pieces, so that they both look like Zs, with one Z facing backwards. Rotate the blue paper so that it rests vertically with the flaps pointing up. Place the orange paper on top of the blue piece with the flaps pointing down toward the work surface. The 2 pieces of paper should be perpendicular to one another.

Tuck the tips of the blue triangles into the folds of the orange paper. Take the tip of each blue triangle portion that’s pointing up, and tuck it into the top pocket of the orange paper. Then, press down on the edges to create a crease to hold everything in place. Your ninja star is starting to take shape! You’ll see two pockets on the top piece of orange paper that you can slide the triangles of the blue paper into.

Flip the ninja star over and repeat the tucking process. Tuck the remaining two orange triangles into the blue pockets. The order in which you fit the tips in doesn’t matter, but you may have to shift your paper around slightly to get everything in place. If you're finding it difficult to slide the paper in, try pinching the sides of the pockets to open up space.

Draw designs on your star to make it yours. If you used white paper, or even colored paper, you can add a bit of flair to further customize it. Draw your ninja insignia to let everyone know that it’s your shuriken.

Throw your ninja star by the point. Hold the star vertically, with your thumb and forefinger pinching one of the star’s points. Pull your arm back, and throw the star as though you’re throwing a baseball, but more gently, and with a slight flick of your wrist as you let go. Practice makes perfect!