Okay I will save the legend for after the explanation. Okay so, yes, we are drawing on these. But that is only the first step! [He turns his own pumpkin around, revealing a familiar looking red marker outline.]

Basically what you're going to want to do is draw an outline of a face so that you know where to cut later on. Because, in the end, these gourds are going to be hollowed out and we're going to stick a candle inside. So the parts that you cut out will glow. On Dave o'Lantern here, that will be the shades, the mouth, and his goofy little bangs. Make sense?