I'm a brand consultant. I develop and launch brands both with partners and for third parties. Best example of the former is Halsted Vodka, a super-premium vodka currently on sale in the USA. Halsted is a cause brand, donating 15% of its profits to causes benefitting equality for the GLBT community.
I can help you with the marketing of your startup idea so that it presents as a more fully thought-through concept. In the same way that investors want to see a busines plan, these days they also want to know what your marketing plan looks like.