Duplication. Always direct your PSA's to duplicate every step that you take to get to the next level. Don't have them to deviate from that, remember to position them in the correct direction and keep them encouraged for doing so. With Level 1 have them to duplicate what you did. With level 2 have them to duplicate what you did. In Level 3 have them to duplicate what you did. This is the way to go, never vear off from this process of duplication.