I have created a step by step how to create a blueprint, specification and how to make a Technical Requirement blueprint  dependant on the engineering blueprint.
This is meant to be for new assignees or as a refresher. If you are comfortable in creating blueprints and know the process, you can ignore this note.
https://wiki.linaro.org/WorkingGroups/Kernel/GettingStarted/blueprintStepbyStep
If you need clarification on the steps or recommendation for enhancement to this step-by-step, please let me know.

Regards,
Mounir