I want to know now, how you made a gate.
Very simple. Just drive two posts in to make either side of the 'door frame', then put in two horizontal pieces as a sill and top piece. Then all I did was to make a rectangular 'door' shape from four lengths of wood, brace it across the way (make a triangle shape with your bracing, as this will give rigidity), then staple wire to the frame. All you need then is a couple of hinges and maybe a bolt.
I also made mine close under gravity by attaching the door to a rope and weight via a pulley. Very useful to stop hens escaping when you've got your hands full!
HTH!