The Beauty Department: Your Daily Dose of Pretty. Photos + design by Kristin Ess It’s really hard to get clean lines when it comes to putting stripes on manicures. I’m going to share a little DIY secret– nail polish on scotch tape. You can cut a perfect line or triangle and get a fun geometric mani. How-To: Instant Nail Arts - Do Yourself. Tie Dye Your Nails!