well my advice is just to really explain in writing what different drugs do to your body and harms one that will would be a serious topic but people dont like talking about because they get shy is por* because it is an addiction and people will also have some changes with there brains from it so if you could write about that without laughing and take it into serious matter people will see you a bit more serious in what your saying all the time trust me although many people already took me serious others i didnt know came and told me that they couldn't believe i talked about when they don't know its a serious matter that people make fun of which they shouldn't i had a 1 hr presentation about this topic as well so yea good luck buddy