Treat Every Set the Same
Whether it's a buildup set or working set, your ritual – from your approach, setup, and breath – should be the same when deadlifting. Maybe most important of all, your INTENT should be copy and pasted with every set.
Example: In the top video I'm lifting 225 pounds; bottom video 510. Note the similarities.
Treat every set as an opportunity to train with purpose and to nail your technique.