To perfectly center a layer, click on the layer in the layers panel, then press Ctrl A (Mac: Command A) to “Select All” then select the Move tool and click the “Align vertical centers” and “Align horizontal centers” icons in the Options bar.
To perfectly center a layer, click on the layer in the layers panel, then press Ctrl A (Mac: Command A) to “Select All” then select the Move tool and click the “Align vertical centers” and “Align horizontal centers” icons in the Options bar.