Take an average sized paper for making the shuriken. Fold the paper in half, carefully joining the top and bottom corners of it and then open it up again.
Now fold the paper in half once again from the left edge to the right and then re-open it.
Hold the top left corner of the paper and bring it onto the bottom right corner. Press the fold of the paper and re-open it again.
Now fold the paper diagonally again, this time bringing the top right corner onto the bottom left corner and pressing the fold so that it leaves a mark. Re-open the paper.
You have several creases made on the paper and this will make your next steps pretty easy to perform. Bring the left edge of the paper to the centre crease which was made in Step 2. You have to do the same with the right edge of the paper; folding it to the centre crease.
Bring the top edge of the paper onto the centre crease which you made in Step 1. Fold the bottom edge of the paper to the same crease as well and you will form a square in the end.
You will notice pockets being made on all four corners of the square. Hold the edges of the lower-right pocket and pull it out towards the corner. This will allow you to fold a triangle, with the corner pointing outwards. Do the same with all four pockets and you will have a six-sided shape.
Now fold upwards the upper-right point from Step 7, pointing it away from you. You have to fold the bottom-left point towards yourself, making a pinwheel base.
Turn over the entire model and fold the left-facing point in half. This will make the upper, angled edge lining up with the lower and straight edge. This process is to be repeated on all four corners to complete the ninja star.