Firstly, even though that cat's outta the bag, don't give out your name or age. Common sense.
Secondly, make sure you have a safe place to burn the paper, candle color isn't necessarily supposed to be black, if you cannot wear black clothes, do the best you can.
Try to prick your index finger, it works the best, I know from experience. Even if you don't manage to burn the entire paper, it's still valid. Hell, you can even leave the spot you're doing it, if it's what counts for you personally, and burn the rest to make sure there's no hazard. If you mess up a line or two in the recital, then it's okay to go back and repeat it no sweat
if you want the words either in your head, or aloud, either will work.
Most importantly, if the enemy herrasses you about dedicating ignore them. I got annoyed, and still went through with it with flying colors.
HAIL SATAN!!
SAY IT LOUD AND PROUD!!