Q&A for How to Make a Ninja Star from Rectangular Paper

It's harder with small paper. Get some practice first with normal-sized paper, and then move on to the small paper.

By making sure you have very good creases, as this will help it to bend more easily and slip under the paper.

Yes; you could fold the paper where you need the cut and then carefully tear it (folding the crease back and forth on both sides of the paper can make it much easier to tear), or fold the excess in.

Yes, but it would be a little difficult. You would need to fold the paper and cut/rip it into a square. After that, you would make it like a normal ninja star.

Horizontal is the line going from left to right, while vertical is going from up to down.

Throw it like a Frisbee or boomerang if you're a beginner. If you are strong, you can throw it as if you are trying to stop a yo-yo.

Yes, you can use lined paper, as long as you are fine with it having lines. It might not be as strong but it still works.

One theory is that French-speaking Belgians introduced the food to American GI's during World War 1.