I need help defeating bellum (spoilers)

I really thought this would have been asked already, but I can't defeat phantom bellum, and I think it's actually because my touch screen is broke...

So, you draw a figure eight, or a ziggzaggy version of it like you put on that one door in the temple of the ocean king. I got throug that door just fine. I understand you need to be inside the lines, I understand that the stylus can't be lifted and you shouldn't overlap...

And I've litterally sat there and drawn hourglasses for half an hour, and time never stops.

Is there anything else? Like, plotting navigation on the sea chart, I have to be about half a centimeter to the left to properly draw my course, so I've drawn the figure eight slightly to the left, to the right, up, down, random circles... this sucks.

So is there anything else? Like, I've notices Ciela gets bigger at times and makes more noise, when she does that, does that mean you're actually drawing a line? Should Link be moving in the background? When you draw it correctly, do drawn lines appear on the screen?

If anyone is an expert at this, it would be much appreciated.

Sometimes it's hard to make a figure 8 that the game accepts, but that's really all you must do.

1. Did you make sure to get the time-stop thing Ciela gives you?

2. Did you make sure to tap the icon at the bottom of the screen before you draw the figure?

I start at the top left of the hourglass, drag it across to the right, diagonally down to the left, across to the right, and diagonally back up to the left.

Helps to draw it proportionally throughout so you get the full shape. Took me a few tries to get.

Oh and yes Link should be moving while you draw.

By the way recalibrate your DS's touch screen if you're having problems. Do it precise and accurately or you'll be screwed.