Sketching mask

In the lesson we followed a tutorial on how to make a sketching mask.
The first thing we had to do was get a picture and the then go onto image >adjustments>Desaturate. we then selected the mask Icon.

We then made the foreground black and the background white, we then selected the paint bucket and painted over the image. This filled the layer mask in black.We then changed the fill color into white and then selected the brush tool, and changed it into a bristle brush with the size of 300, I then brushed over the image in a diagonal movement which made the image be revealed and in a sketch format, I then brushed in the opposite direction to create a cross hatch.