1. To get started, download and print the marker 10x15 or A5, you will find a link to the application, or open the image on any other device. 2. Click on the Start button, point your device's camera at the marker. 3. To zoom in and out of the device considering the marker on either side 4. The marker should not go beyond the limits of the device's camera, the loss of the model again, move the marker.