In addition to seeking a professional' service, you can:
- See latest products for your niche market for how they are communicating their message to the audience and the interaction design (refer to awwards for instance)
- Did you follow A/B testing at prototyping stage to identify what works better
- Do you have a branding style guide for directions and reference?

I am a content strategist and information architect, and I can certainly have a look. My review skills is what separates editors from writers, in content community. Let me know if you are interested!