If you mail the paper, it must be post-dated August 15, or before. What Counts as Acceptable Evidence To successfully write a paper defending the innateness hypothesis, you must include evidence that actually supports the hypothesis. Children acquire certain grammatical structures in the same order. Deaf children babble with their hands just like hearing children babble orally. Different creole languages have similar grammars.
Children never make some grammatical errors.
Other points may be very important to your paper as well. Such an approach does not directly support innateness, but it does show that competing theories are crucially inadequate, which means that a search for an adequate theory of language acquisition is needed in the field.