Make the cuts shallow so they do not go through the leaf. These cuts will serve to bound the sides of the leaf strip. Grasp the tissue firmly and pull.
Some species are more difficult to strip than others.
Other Techniques P aint clear nail polish on the leaf surface, allow it to dry and then remove transfer it to a piece of clear cellophane tape which can then be taped to a microscope slide for viewing. In some cases, it is even possible to apply the tape directly to the leaf, rub it down and then remove it and transfer it to a microscope slide.