If you’ve been painting messy patches on your walls with tester pots, you’ve been doing it wrong! In this video, we show you the best way to use paint testers by applying them to lining wallpaper instead. This clever trick means you can move samples around your home, see how colours look in different lighting, and avoid unsightly wall touch-ups. With tips on prepping, labelling, and even using low-tack masking tape like Tesa’s Precision Sensitive range for temporary wall placement, you’ll discover a smarter, cleaner way to choose your perfect paint colour.