Beuatiful work Jurgen. Although it can be angled either way, with this type of plow, the taller (Right) side would normally be angled towards the rear. The snow collected is funneled towards the taller side and deposited on the curb side (for US roads).
It works the same angled towards the other side but in deep snow the accumulated snow may spill over the top of the shorter side of the plow blade.
The larger berm of cleared snow wil be deposited on the end of the plow closest to the front bumper.
Here in Michigan the Department of Transportation adds a wing plow to either or both sides of the vehicle and may tow another on a trailer to clear multiple lanes at once.