3 SIMPLE STEPS :

1) Buy orange plastic cups and small electric lights (NOT candles, they would make the cups catch fire!);

2) Draw Jack o’Lantern faces on the cups with a marker, upside down;

3) Put the cups over the lights.

Click on the link to find easy patterns to carve your pumpkin :

http://www.history.com/interactives/pumpkin-carving-patterns