@ozzmeister00 nailed alot of it right there.
I would add to spend a decent amount of time testing and pushing workflows/ideas to the limit with colleagues (where possible).
Processes and pipelines may seem amazing in theory but, in practice, they can be a different beast altogether. Spend the time to know the flaws/limits/gotchas. You wont cover everything you’ll encounter during production, but you and your colleagues will be far more confident in it as you go on.
Also, think about bang for buck. Don’t waste a large amount of your time perfecting code or pipeline that only gets used a handful of times. You and your colleagues time is precious, so make the most of it.
Finally, speak to your artists too - they may be surprisingly vocal about how they’ve worked previously, what went well and what sucked.
All the best!