Architectural-level reuse of software can be achieved in the form of application frameworks. Then, the architecture of a system can be copied from a framework, and the developer is liberated to application development. In this scheme, patterns utilized for specializing the framework play a critical role. Unfortunately, the bigger the specialization pattern, the harder it is to adapt the pattern to a particular design due to increasing number of bindings between pattern roles and the elements of the design. In this paper, we introduce a tool supported methodology based on UML in which specialization patterns are grouped to match different concerns, i.e. conceptual matters of interest, they treat. Also, user-controlled instantiation of individual patterns is allowed to promote learning the architectural conventions. We argue that this approach overcomes some limitations, especially the lack of adaptability, of wizards that are commonly used for similar purposes.