Here are some of the more structual photos to help people along the way.
I did the head board and foot board using the directions. I used 2 4.5 inch screws on each 4x4 post to secure the 4x4s to the head board.
I used 2 4.5 inch screws to secure the head board to the frame.
I used some brackets I had lying around to secure the footboard to the frame.
I used 0.5 inch partical board to put on top of the frame I put the joists down 0.5 below the side rails so the partical board would sit down and inside.
I used 2x6 boards for the frame with deck brackets to secure it.
I used left over wood from the 4x4 to be cut 10inch each and 2x6 study 3 of those 4x4 to lift the frame up.
for the fourth raiser I used left over wood from the 2x10.
I primed the wood and painted white.
Hopefully these pictures help.
All said and done it was close to 500-600 to build. I did this in Canada where materials can be a little pricier.