If you have read through the questions and comments here, you'll know that I discourage anyone of your age against practicing witchcraft. You don't have the necessary life experience or common sense to mess around with things you can't possibly control. I had a message a couple of weeks ago from a woman in her forties. She had played with spellcasting when she was sixteen. She said she had no idea that the results would be so devastating. She's still dealing with the consequences today and wishes with all her heart that she'd waited until she was older and wiser.
You are too young. Wait a few years. You can use the time to study to become the best witches ever.