To apply business modeling techniques, you need to follow a systematic and iterative process that involves four main steps: ideation, validation, implementation, and evaluation. In the ideation step, you brainstorm and generate as many ideas as possible for potential income sources. You can use tools such as the Business Model Canvas, the Value Proposition Canvas, or the Lean Canvas to map out your ideas and visualize your business model. In the validation step, you test and validate your ideas with your target customers and stakeholders. You can use methods such as customer interviews, surveys, landing pages, or minimum viable products (MVPs) to collect feedback and data. In the implementation step, you execute and launch your income sources. You can use tools such as project management software, marketing software, or e-commerce platforms to manage and deliver your products or services. In the evaluation step, you measure and evaluate your results and performance. You can use metrics such as revenue, profit, customer satisfaction, or customer retention to track and optimize your income sources.