On large photos, run the action, edit the layers settings, merge everything together, make sure to create a background from the layer ( click on the layer and from the menu go to: layer New Background from layer), now run the action again, edit the layer settings and save.

Make sure to use photos that have a good lighting, that are of good quality, that are not pixelated and that are at least between 1000-4000 pixels, for bigger photos, run the action twice.