There are a few different ways that you can move a specific layer in Photoshop. You can use the Move Tool, which is the first tool in the Tools palette. To use the Move Tool, simply click on the layer that you want to move in the Layers palette, and then click and drag the layer to its new location.
You can also use the keyboard shortcuts to move a layer. To do this, first select the layer that you want to move in the Layers palette.
Then, use the arrow keys on your keyboard to nudge the layer into its new position. If you hold down the Shift key while you use the arrow keys, the layer will move ten pixels at a time.
Finally, you can use the Align tool to align a layer with another layer or with the edges of your canvas. To use the Align tool, select both of the layers that you want to align (you can do this by Shift-clicking on both layers), and then click on the Align button at the top of the Layers palette.
A menu will appear with several different alignment options. Choose the one that you want, and then click OK.