Learn how to make two images blend into each other seamlessly. We cover the use of the
The gradient tool allows you to create a gradual blend between multiple colors. There are a number of gradient presets such as a blend between the foreground and background colors and a blend between the foreground color and transparency.
A layer mask is used to hide portions of a layer and reveal portions of whatever layer is below it. You can modify the mask by using the brush tool and painting in either black or white.