Your first night in real Photoshop. You're putting a whole world inside a person.
Layer masksRemove BackgroundClipping masksBlend modesAdjustment layersPSD vs JPGPicture a movie poster. You see one side-profile portrait of you, on a clean light background. Inside the outline of your head and shoulders there's a whole other photo: a foggy forest, a city at night, ocean waves. The scene lives only inside you. Outside your outline, it's empty.
Open your PSD and the Layers panel should read, from top to bottom: a color adjustment, Scene (clipped, with a mask), Portrait (with a mask), Background.
This is a Photoshop file with the layers already named and stacked. Open it, and you're in the right spot.
Watch the first 3 minutes together. That's the whole idea: black hides, white reveals.
Want the deep dive? The full 29-minute lesson from PiXimperfect is there for early finishers.
This one is in or out. Every box gets a check, or it's not done yet.