in the diagram, the red line that goes across all parts of the plant ( the FIM Line) is what you cut. The whole red line. You push the fan leaves aside and cut exactly where the red line is. If you use scissors, sterilize 1st. I have cut to where it equalled 2/3 of the fim line and got a couple more colas, Move up the red line towards the top of the plant and cut just a little higher. But if its your first time go by the chart. FIM is so much better than a regular topping procedure. Than do yourself a favor and learn how to supercrop. U can combine both and you will shit with your yields!!! At least i shit my trousers because 2 plants can seem like 4 or 5 high yielders... No shit. Good luck and holla if you have questions or need some shit from my trousers. lol