Measure the area you will cover with lattice and cut the lattice to size with a jigsaw. Alternatively, you may work with sections of lattice pre-cut from your local lumberyard.
Use the 2-by-2 pine as supports for your lattice. Cut the wood to size with the circular saw and attach securely to your project with deck screws.
Cut the U-molding to fit the pieces of lattice and slide it on. Attach the lattice to the supports with the deck screws, leaving a 1/4-inch space between pieces to allow for wood expansion.