Congratulations on getting your first retail contract! Not knowing anything about your product, it's hard to give you a specific answer, but I hope that my recent article would be helpful. The article compiles advice from venture capitalists themselves how they like to be approached by startup founders and what they are looking for before they decide to invest in a company: http://www.anagard.com/blog/2015/01/13/venture-capitalists-advice-to-startups-how-to-successfully-raise-funds/

By the end of the day, your business model and plan is the key, so please don't hesitate to call if I can help further.