Make sure that your head stays in line with the rest of your spine throughout the entire lift. (fitnessandpower.com)
An athlete knowing they are going to reach lockout will decelerate enough that barspeed during the entire lift is compromised, so chains and bands can help fix that issue. (blog.trainheroic.com)
An important cue is to push out your stomach as hard as you can through the entire lift. (bodybuilding.com)