This may not be the best way to photograph an image
The one third guide is only reasonably accurate when focussing at one third of hyperfocal distance.
At other distance it can be inappropriate relative to the depth of field you get.
Hyperfocal distance is closer with wide angle lenses than telephotos
with the same focus distance and aperture - primarily due to the different angle of view.
Depth of field is generally photographically equal either side of point of focus
in close up photography.
Close up photography is normally done at a much closer focus distance than hyperlocal distance.
Depth of field changes to dramatically more behind the point of focus than in front by hyperlocal distance.
Hyperfocal distance may be appropriate shooting a cityscape across a river
if you want much of the river as well as the buildings sharp, and less appropriate if you want the river moderately unsharp to emphasise the buildings in the image.