Hello Marfa. If you can give a little more context as to the problem please? Your cones? You mean in the Voronoi pattern? Maybe the settings have changed from one Blender version to the other. You can try using the Blender version that is being used in the course. That way you can see the difference more clearly. If not, try to see if the settings of your texture match the one from the video. You can always changed them to match.
