Getting that perfect straight line can be almost impossible, especially if you have a shaky hand like me. A quick cheat for this is to cut a business card in half and use it as a guideline to apply eyeliner, or you can use some Scotch tape. This can also prevent your line from getting too thick. This is the perfect stencil for those winged looks, and you can improvise with angles to get the cat eye style. If you practice and get this look down and feel like being a little brave, there are more tips for getting a straight line freehanded. There are a lot of videos that can help, like this one:
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