Ask any kid, and he or she will tell you they want a big, big pumpkin. So, you must deliver. Your mission, should you choose to accept it (and you have), is to fuel the growth of your fruit to produce the biggest ones you've ever seen. This translates into lots of fertilizer and a constant supply of water. Also, late in the season, you need to be diligent and guard against insects and plant disease, especially powdery mildew.