In order to help you with your scanning experience, we have created the image starting point. This tool helps you get a good scanning position at first, hence will render a perfect scan. Please follow the instructions below for the different body parts.
Dorsum, wrong position:
The foot is out of the foot gauge, hence, one of the three points around is on the foot instead of being on the flat surface, causing a slanted scan box.
Dorsum, good position:
The distance is good, confirmed by the three green dots, that are all on the flat surface. The scan box is well positioned.