Basics of drawing a heart with the pen tool in Illustrator

I'm one of those people who jumps to page 300 of the manual because that stuff''s more fun, without taking the time to learn the fundamentals first.  I'm starting to get the hang of the pen tool in Illustrator but I still don't how to draw curves the correct way.

My understanding is that the correct way to use the pen tool is to avoid compound anchor points whenever possible, but I can't seem to get that to work when drawing a heart shape,  especially the kind where each side has a convex curve flowing into a concave curve before hitting the bottom anchor point.

Here's a link to a file with an image that I have traced. Please trace the heart the correct way and post the modified file so I can see exactly how it should be done: http://www.discretedata.com/Ex-Ex/HeartDemo.ai

Thanks!

John