First; dig a load of holes....

Then make a door & door frame out of treated timber......
With the help of a chicken that thinks it can read the instructions!

Next hammer posts into the holes, then put anchor plates over the posts and back fill the holes, with the help of a lovely assistant....

Then slot hoops over the posts & fix the ridge pole in place & attach bracing poles to each corner.....

Next fix door frames to hoops at either end and base rails to bottoms of hoops....

Put paving slabs up the middle to form a path.....

And then cover the whole structure in plastic (try to do this without swearing!)

And there you have it...... a polytunnel!

Just add plants......