1. Open up your brush image , select the area which you want to be as your brush.

2. Now, go to Edit >> Define Brush Preset

3. Put a desired name for brush and click Ok.

4. Now let’s learn the more complex trick. Open up a image , I used a Lotus Wallpaper.

5. Grab the Magnetic Lasso Tool and select the flower.

6. Right click on the selection and click Layer via copy

This what you get;

7. Repeat steps 2 and 3.

That’s it ! You now have your own brushes.

Don’t forget to save it !