This is a good check list of how to scope a project, especially when you are working across multiple functions.  

Legal Project Management (LPM) is a growing skill set for in-house legal teams.  The section highlighted below, is an essential point.  The scope and logistics of a project do change and if some cases change often.  As an LPM specialist, you have to ensure that you and your project plan are flexible enough to "go with the flow".

Also, remember to hold a detailed debrief at the end of the project as well as an invaluable "lessons learnt" session.   Secondly, try and train on the basic tools essential for project management, for example advanced Excel. This is key to running any project effectively.