The adoption of IMS-LD as a standard conceptual model for pedagogical scenarios description will allow increasing interoperability in online learning. Since IMS-LD modeling activity does not count among the practices of teachers, it?s imperative to provide a methodology to see them through this task. IMS-LD authors proposed one in the Best Practices Guide but unfortunately existing LD tools were not designed to support this or any other methodology. We propose a generic support for methodologies through a formal framework (Incremental Modeling Process) and provide an implementation (ModX module) using IMSLD best practices as an example.