Dr. Who Cake in Progress

Tonight's the premier of the new Dr. Who special "Water on Mars", which means a big party for us Dr. Who dorks.  And I'm bringing the cake! 

It's supposed to be a a sonic screwdriver and will hopefully look something like this:

or this:

or even this:

  
Here's what it looked like this morning... 

 
...and yes, I know exactly what it looks like here, AND I've heard all the possible jokes about it from Snarkyboy already.  Obviously, there's still a lot to do to it before it's finished.