A pass play that you run there is throwing to a receiver who lines up in the slot, runs 3-4 yards upfield, turns right and runs parallel to the goal line (just inside the end zone). You throw it to his outside. Not a tough throw and the receiver's body shields the ball from the defender. Teams run that play all the time. Very difficult to stop it.
Personally, from the 3 yard line, you line up with 2 backs and run it.