Write an article based on this "Mark the platform to use as a guide for the back wall. Lay the boards out for the back wall and nail them to each other. Add plywood siding to the wall. Repeat the process for the side walls. Measure the door you plan to use for the front. Make a frame for the door. Build the front wall. Make triangular pieces for the side walls to brace the roof. Nail these triangles into the top of the side walls."

Article:
Set a chalk line 3.5 inches (8.9 cm) from each side edge. Measure between these lines to make sure it's 113 inches (290 cm) apart; take measurements at different points to see if the lines are parallel all along the platform. Place the 2 113 in (290 cm) boards at the top and bottom of the wall. Add 2 6 ft (1.8 m) boards to each end. Space the other 4 6 ft (1.8 m) boards out evenly across the middle of the wall running up and down. Nail the boards into each other with size 16 penny nails. Nail into the top and bottom of the wall at each perpendicular board, adding 2-3 nails to each end for every board. Cut the plywood to fit the wall by measuring the wall and the plywood. Lay it on top of the wall, and then use size 6 penny nails to nail it into the boards below. Try to place a nail at least every 1 foot (0.30 m) or so. Move this wall off the platform to work on another wall. Lay 2 192 in (490 cm) boards going lengthwise along the platform, one at the top and one at the bottom to form the wall. Place 1 6 ft (1.8 m) board on each end and space the other 8 out along the middle at an equal distance. Nail the wall together with size 16 penny nails by adding 2-3 at the top and bottom of each vertical board. Wait to cut and nail in the plywood siding for this wall. Do this step twice to build a wall for each side. Before building the front wall, you need to know how big of a space you need to leave in the front wall for a door. Measure the height and width of the door using a tape measure. Create the frame out of your 2 by 4 in (5.1 by 10.2 cm) boards. Cut 2 boards that go the height of the door and 1 that is the width of the door plus the width of the other 2 boards. Place the 2 longer boards parallel to each on the floor on their edges and the shorter board perpendicular at the top on its edge. Spread the 2 longer boards out so they are at either end of the shorter board, then nail them into place with size 16 penny nails to form the frame. Lay out 2 113 in (290 cm) boards at the top and bottom. Lay down the door frame you built where you want the door to go. Space out 3-4 12 ft (3.7 m) on either side of the door frame, placing one each directly on either side of the door. Cut a board to fit on top of the door frame going horizontally between the 2 vertical boards. Then, cut a board to go from the top of that board up to the top board of the wall frame.  Nail everything together in the frame with size 16 penny nails. Secure the long board to the top and bottom boards and the door frame to the vertical boards. You may need to go in at an angle for the vertical board above the door. Cut plywood siding to fit over everything but the door frame and nail it into place with size 6 penny nails. Lay out the boards you made for the triangular roof brace. Nail the boards into place with size 16 penny nails. Remember, you need to make 2 triangles, one for each side. Place the longest edge along the top of the wall with the right angle at the front. This side will meet the tall wall at the front of the shed. Use size 16 penny nails to attach the piece to the top of the wall. Cut plywood siding to fit the walls and nail it into place.