Looks fine Alfrik.
The 45 degree cut is o.k. for that type of fence but leaving it as 90/90 is also o.k. for steel-mesh fences.
My property has several fence lines (without the razor wire, thank Mithra) of this type (about 50mm aperture). It's turned at the top for rigidity and safety.
You can take it out to around 200mm aperture (too lazy to do the scale calculation for 28mm at the moment) as "pig-wire". Don't let the horses near it though as they'll damage themselves.