Lydia shares expert tips on achieving smooth walls through proper sanding techniques. She explains the importance of sanding, debunking the myth that true professionals don’t sand. She breaks down different grits, from coarse 80 to fine 320, and highlights which tools are ideal for various jobs—from hand sanding sponges to power sanders. Lydia emphasizes the need for cushioned pads to avoid scratching surfaces and recommends specific products like the Trim-Tex Black Widow and Makita sander. Matt praises Lydia’s work and encourages viewers to follow her for more insights and subscribe for updates on new content and tool recommendations.