In Photoshop is a very useful but is not most people make full use of resources, that is to create a custom brush, use the good function can improve your work efficiency,
We can create a new document, in order to make to the size of the brush size, with black paint brushes you image, such as a flower, a tree grass, and so on, and then with rectangular marquee selection, defined as the new brush,
Believes that the function of some help to you, so that the painting to achieve the best effect,