A lot of cameras these days have that capability.;
,, Be sure the subject of your image is at the crosshatch whenever possible.


Even if it isn't at the crosshatch, but at the location of a third; left, right, top, bottom. In this screenshot, you see that the eyes are at the top third.
 Here you can see that the girls body is at the right third and her head is at the top right intersection (figuratively speaking).
Check your camera to be sure that it has a grid.
Do what you can to visualize a rule of thirds type of grids, if it doesn't.

,
With the 'visual' of the rule of thirds, take a photograph.
Be sure that the point of interest is at the intersection of the crosshatches, either real or imagined.
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