Professional blending (Train Tunnel) - part 2

This is a little bit of topic. I was curious to how much information was held in the pixels in the tunnel. So I made a temporary adjustment layer and dragged the middle slider towards the left. You can now see the direction which the tracks turn.

In this one I put the opacity down and started to try position the train where I wanted the tracks to go. It is just a rough estimate at this stage. I'm mostly trying to highlight that by changing the opacity down I could position another layer easily.

This is just a quick intro to masking. For anyone out there who doesn't know how it works I would advise you go look up a tutorial. However, if you want to stick with this one. You first click the mask button. labeled 1 in the picture and secondly you can use the brush tool to paint the mask by clicking 2. You can use other tools in masking but I believe the brush to be the easiest.

With the brush tool selected by right clicking on the picture you can change the size and hardness of the brush. This enables you to mask with a feathery soft touch or with a hard touch. You'll see what I mean a bit further on.

This step just shows the start of the masking. All the information in the picture is just about how to go about masking.