Open the Image menu and select Apply Image. The Apply Image tool will let us tell Photoshop to copy the background layer into a layer mask In the Apply Image window, select Background as the layer and checkmark the Invert setting. Click OK when done.

Now you should see the photo you started out with as a rusted metal image. The results are too perfect to look like something hand made so we'll need to distort the layer mask to make it look more natural. First, we'll increase the contrast using the Brightness/Contrast tool (Image> Adjustments> Brightness/Contrast). In the Brightness/Contrast tool, adjust the settings to achieve a look that you like. It may be helpful to use the legacy Brightness/Contrast tool instead by checking the "Use Legacy" option.

Now we'll distort the layer mask slightly so that the lines are a little more wobbly. For this, we'll use the Glass filter that can be found in the Filter> Distort menu. Open the Glass filter tool and adjust the settings to create a slight distortion.

When you are done, you should have an artistic rusted metal image. It may look flat, but we'll add some depth to it in the next steps.
