Welcome to Sticker Education. Your first lesson: the Standard Vinyl Die-cut.
Often one color, these stickers are plotter cut directly out of sheets of colored vinyl. They are not printed. There are no white edges or background material.
1. When it's time to apply the sticker first remove the backing paper. It should come off easily.
2. At this point you'll be left with the clear (or white) transfer tape and the colored vinyl. Use your finger or a squeegee (credit cards work, too) to smoothly lay your sticker down.
3. When you're sure your sticker is stuck REMOVE the transfer tape SLOWLY, peeling from one corner to the opposite side. This should leave you with just your one color die-cut design.