When working on wood or other surfaces, spotting screws before applying your final coat is crucial to achieve a smooth and professional-looking finish. In my experience, the key is careful inspection under good lighting to catch any imperfections around screw heads early on. I recommend starting by using a bright, adjustable light source held at an angle to create shadows; this makes indentations and protrusions around screws more visible. Once you spot the screws, filling them properly with a suitable wood filler or putty is essential. After the filler dries, a light sanding ensures the surface is even and ready for the last coat. One trick I’ve found helpful is to slightly countersink screws before filling them, which minimizes protruding screw heads and reduces the amount of filler needed. Additionally, using fine-grit sandpaper for the final smoothing avoids scratches that can show through your finish. Applying the last coat after these steps results in a sleek, flawless surface. This attention to detail can make a huge difference in the overall appearance and durability of your project. Taking the time to spot and properly treat screws before finishing ensures your work looks polished and professional every time.