I have lost it

When exploring a complex process or one that takes time to understand it is important to make sure you do not lose any detail of the project.
It may be worth using a spare wall for this purpose, potentially supplementing labels with photographs or samples of what the process is completing at that point and what state the assets would be in. This would allow you to walk ‘through’ the process and follow along as the work and steps are completed.
This can be coupled with having someone else follow through this process and confirm they come to the same understanding as you at the end. This will allow you to confirm the process is correctly captured and start to explore the ways some of the steps may be improved, simplified or even made more robust.