Three offensive players and three guys guarding them
#1 passes to #3
#1 sets a down screen for #2
The defense either goes over the top (tight cut), under (fade cut), switch (slip), or deny (back cut)
Offensive players make the read accordingly
Make sure screener second cuts, i.e., pop (tight cut), dive (fade cut), pop (slip), or pop (back cut)
Play live if there is a scoring opportunity
Work on this from different spots on the floor
Work on different screen actions (i.e. flare screens, down screens, nail screens, etc.)