Unless you’re Martha Stewart, it can be hard to cut in a straight line. Forget the ruler and pencil, just buy a pair of these awesome laser guided scissors. They will give you straight lines every time.
This must be what it looks like when the Borg do arts and crafts. Of course their lasers would cut the paper by itself. They’ll only cost you $20. I am Locutus of Borg. I will assimilate wrapping paper and cut straight.