Parts List:

• Plate 1 x 2 (2)
• Plate 1 x 3 (1)
• Plate 1 x 4 (1)
• Plate 1 x 6 (1)
• Plate 2 x 2 Corner (1)
• Plate 2 x 2 (1)
• Plate 4 x 6 (1)

Notes:

• All of these new plates should be at the same level.
• That Technic brick from earlier should hold itself on pretty well now, so you don't need to support it anymore.