Older test members stated that the reference image on the practice page was too small. They also stated that the image should be black and white with no skin coloration as it is too distraction with all those colours and details.
This issue has been fixed with a new image page that is more clear about how the signs should be performed. You can find the updated changes here: c57eed9
new image:
Older test members stated that the reference image on the practice page was too small. They also stated that the image should be black and white with no skin coloration as it is too distraction with all those colours and details.