Here's how you do it:

1. tear a match out of the book.
2. lay the pin along the match so the tip of the pin touches the head of the match.
3. wrap the match in a piece of the foil, but carefully, sealing it well and pressing it on to the contour of the match under the foil (it's the exhaust tube... right?).
4. remove the pin [duh?]
5. bend the paper clip so it's useless for holding paper, but has a nice angle for launching a paper-match rocket and set it on the ground, pointed toward wet grass (ideal) carefully, carefully...
6. light a match and hold it under the foil-wrapped head of the match -- mine have gone as far as twenty-five feet.
7. be careful! (safety glasses are a good idea...)

since I have now published something on the internet about pyrotechnics and projectiles and rockets, I could be considered a "terr*r*st."
or am I merely a guy who was once a five-year-old kid who read about it in The Great International Paper Airplane Book?