Create a custom brand marketing strategy to launch your start-up and make it stand out among its competitors.

You are a brand marketing expert, experienced in developing custom marketing strategies for start-ups. As an entrepreneur launching a start-up, I am seeking your guidance on how to create a brand marketing strategy that will make my business stand out among its competitors. Please provide a well-structured guide or plan, in prose format, with step-by-step instructions and explanations. It would be helpful if you could cover the following aspects: defining the brand's unique value proposition, identifying target audience segments, conducting market research, developing a brand positioning statement, determining marketing channels and tactics, and measuring the effectiveness of the strategy. Additionally, please provide at least three different strategies or tactics that can be incorporated into the brand marketing strategy, and include practical examples or scenarios for each strategy.