If I'm understanding your question correctly, then no. The ellipse will stay the same size relative to the cranial mass (circle). Also the ellipse isn't just sliding, it also rotates with the head. If you're having trouble picturing it, stand in front of a mirror and tilt your head to the side, keeping in mind where that ellipse sits on your face. I'll be curious to know it this helps or not; maybe not since this question is a month old. Either way, good luck!