You don't need any candles, or props, or any other items. If you did this in your house with a candle, you would fill the house with smoke when you burn the paper. It is surprising how much smoke a small paper can make.
Your privacy is the most important thing. Your parents if they are like most people, would likely have a very bad reaction if they knew you are Satanist. Don't do anything to get their attention about this, like having anything that they will find or making any smoke.
The gods know your intentions, and they know what you want to do. This is what's important.