Clear stamps are very easy to use, however they do need to be attached to a smooth surface prior to stamping. Special acrylic blocks are sold for this purpose and these are ideal as they are completely clear and are found in a variety of shapes and sizes.
To use, the stamps are simply removed from the protective backing and attached to the block.
The stamps are then dabbed with ink and used as normal.
The stamps can be combined or arranged on the block as required, this gives a wide range of design opportunities.http://www.china-crafts-supplies.com/clear-stamps/