We also learnt to rochet an amigurumi heart. I was in a kind of hurry, so I decreased the bottom of the heart more than necessary, so the shape of it was not as yummy as I'd wanted it to be. But who cares? I now know how to make amigurumi hearts in any shape and size...
If you're in Istanbul on either 14th or 23rd of January, you still have the chance to attend the beginner's level amigurumi classes