Install 2x4 Top Layer and Finish Decorative Elements

What happens here

After all 2x6 cross members are installed, proceed with the final layer of 2x4s. These smaller pieces are placed perpendicular to the 2x6s, creating a grid pattern. The creator uses a temporary plywood board as a platform to safely work from on top of the structure. He pre-stained these 2x4s as well, and mentions they were 14 feet long, requiring him to butt two pieces together to cover the 20-foot span. He made sure to stagger the joints for strength and hide them with the next layer. Secure each 2x4 with screws to the 2x6s below. Finally, for decorative and stability purposes, install additional mitered wooden pieces (wedges or corbels) at the base of the posts where they meet the main beams, using screws and ensuring they are flush and visually appealing. If the provided hardware for these decorative elements is an undesirable color (e.g., green), use spray paint to match it to the overall aesthetic (e.g., black).

Goal: Complete the pergola structure with the top grid and aesthetic details