This might have been answered before but I'd appreciate a quick reply.

So, how am I supposed to wear cycling glasses combined with windproof skull cap and my helmet?

The arms of glasses can't really sit in the notch between the skull and ear because the windstopper skull cap really smooths out the place when tightened by the helmet straps. As a result, they sit in a small bump which is higher than usual, making the glasses look down. What do you do for that matter? I love my new skull cap.