MASK IMAGES TO TEXT
One of the easiest ways to make a composite is simply to clip one layer the shape of another. This is often used to confine images to text like this. Simply hold Alt and click the line between the two layers in the Layers Panel to create a clipping mask. The shape or text (the ‘container’) should be on the lower layer, and the image that you want confined to it should be on the layer above. You can clip multiple layers to one shape if you like.