The first step to building your brand is to create your value proposition. It's important when developing your value proposition that it be clear and concise. Start by brainstorming what the companies and industries you have researched have in common. What things do they want that you can provide? What is important to them?
Once you've identified common needs you can develop your value proposition around them. Keep in mind that the purpose of your value proposition is to identify and satisfy an unmet need of your target job market.