pictures would assist most members who is too far to attend such lessons.
what I have learned is that when you cast the net, you always need to stay infront of the moving net,
if for any reason the net overtakes your casting action it would entangle itself and not open.
aspects like wind direction is also important.
casting into the wind should be low and flat. casting with the wind should be from the top down wards.
cause if you were to cast in the air, the wind will sweep the bottom section underneath the top section. so that the top section would land on the bottom section.
practice makes perfect.