I'm only in 7th Grade and don't particularly like public speaking, but any time i have to present something or write a paper I will always treat it like reading a brochure. NOT a sales pitch, that will only bore people. Focus on the good things about your topic, but don't forget to still mention the bad things. Make it sound interesting, exciting, and fun, all at the same time. You may also want to practice in front of a mirror if it's lengthy. This seems geeky, yes, but it's not like anybody's gonna know.