Ooh exciting chocolate :) 
So I had a go at the shirring dress, and the whole tension thingamy on my machine very nearly broke me and the bobbin (actually, it did break the bobbin twice but I fixed it. Thank goodness for the magnetism of scissors so I was able to locate the tiniest screw in the entire world ever!)
Here's a link to it if you fancy a nosy (and please don't look too closely at the shirring towards the end - the tension had really given up by then! :o)
At some point I'll need to try and make DD2 one too! 