Even experienced DIYers make mistakes when installing trim. The good news? Most common trim issues can be fixed quickly and easily. In this video, Ace Home Expert Lou Manfredini shares simple solutions for correcting gaps in inside and outside corners, hiding nail holes, repairing minor imperfections, and using caulk and lightweight spackle to achieve a clean, professional-looking finish. Whether you're wrapping up a trim project or looking to improve your results, these tips can help make your work look polished and paint-ready. In this video, you'll learn: How to fix imperfect trim corners When to use lightweight spackle vs. caulk Tips for hiding nail holes and surface blemishes How to create a seamless, professional finish before painting Common trim installation mistakes and easy fixes With just a few simple tools and materials, you can transform an average trim job into one that looks professionally installed. ✅ Subscribe to the Ace Hardware YouTube channel for more helpful h...