Dear Josh, I'm a native Portuguese speaker, I have a Master Degree in Languages, Literature and Cultures, and a vast experience as a translator (websites, legal and technical documents, articles, e-books, books, you name it). Being mandatory to be an impeccable proofreader too, I can give you a flawless translation of your 20 pages' power point slide show, from English into Brazilian Portuguese, with high quality. Please, see my private message for more details and work samples. Grateful, in advance, for your availability. Best Regards, Vítor Cortes