Best way to use extension tubes so that you can go closure as much as required with all the lenses. Using long lens will give you distance to shoot whereas shorter the lens will have go closer upto 2/3 inches. I hope you have seen my caterpillar shot with the drops which was taken very close to the subject with regards,
Donot get irritated Sonja, some time unknowingly such things happen. Cool down and let us behave maturely with regards,