I agree on the basics Justin. I usually show tai sabaki first and have them practice that and then we move to the technique. When is show the differences between what is being shown and what is being performed I emphasize the correct tai sabaki. I often use something similar to shadow boxing. I have everyone perform the technique without anyone attacking them. We do this several times on both sides. Then we move to attack. It helps but it seems when someone is attacking parts of it fall apart
. Then we have to work on correcting the problems.