Mobile prosumer environments describe situations in which non-expert users have the possibility to create and provide their own services to others in a prosumer framework. This paper describes a systematic approach for leveraging current IoT scenarios, where two types of roles (developers and prosumers) interact in order to develop a framework that would allow users to create and publish useful services in IoT scenarios. This paper also discusses the responsibilities of both roles, activities to be carried out, the challenges to be faced, and a proposal of best practices for this kind of development. Our proposed method is tested by the development of a service personalization environment based on Web technologies in the field of drug management in hospital pharmacy.