Get some 4 or 6z and cut holes in it then practice mending the holes. All you need to remember is you have to cut away some meshes to make the repair easier for yourself. If you look at the drawings in the link no matter what shape the break is they alway cut away meshes so that you can complete the repair in one go.
I have an old net here that is in drastic need of repair, when I get round to doing it I will take photos.
TC
Get some of the 4z I got from advanced netting, no need to cut holes in it, it was pure tripe.
Care to elaborate..?