step 1. Open image in photoshop

step 2. Convert to black and white Image –> Mode –> Grayscale. Discard color information.

step 3  Adjust Brightness/Contrast: Image –> Adjust –> Brightness/Contrast

Step 4. Resize: Image –> Image Size –> Set Resolution to 300 Pixels/Inch.
Step 5: Apply Halftone Filter: Filter –> Pixelate –> Color Halftone. Set Max Radius to 30 (Pixels), Channels 1-4 all to 45 degrees.

Step 6. Laser engrave it!