Here's how to do it.
1. Apply a thin layer of clear top coat over polished nail and let dry completly.
2. Take the special polish of your choice to the plate,then scrap off the extra polish with the scraper.
3. Next take the stamper and pick up the design.
4. Apply a layer of clear to the entire nail, making sure not to smudge the design as you go over it. (Remember: A little clear coat goes a long way.)
If you wait to long in between scrapping off the exrta polish and picking up it up with the stamper the image will dry and you wont get a good image. I usually take a quick look at the design before placing it on nail to make sure I have a full image. If not then I wipe off the stamper and begin the steps again