Now, a little tip for you....dont put forty candles on your cake (its a fire risk at your age !!!), use a forty watt bulb....its cheaper, less hassle and you can switch it off when you pretend to blow it out (saves embarrassement when you cant actually blow out all the candles !)
And we all want see extreme close up shots (macro even !) of the ABW birthday cake...so no pressure really !.