You need to be precise when cutting the wood to size, and if this is too tricky you should take your measurements to a local wood cutting shop.
If you have your own tools or can borrow them, cut the wood to size.
Georgina said: “Make a frame around the wall first by glueing the bars and tacking with pins to hold it in place until the glue has dried.
“Use a spirit level to make sure you start off with everything level.
“Then add your vertical bars, followed by the horizontal bars in between.
“Sand the bars, fill any gaps and paint, using a primer and undercoat first.”