Extruding a form along a curve + rotating it Is there a way to control the rotation of the extruded mesh along the curve?

To show what I want to do: 

And this is what I got so far


Don't worry about the overall proportions and the mat (still on it) But my Problem is that I can't control the rotation of the object along the curve. 

I tried to apply the modifiers and just rotate parts of the model by hand, but that leads to certain issues in the edgeflow and I can imagine that there is a much easier and cleaner solution.
To rotate the vertice of a bezier curve: ctrl T, you can also see and change the Tilt value in the 3D properties panel (activated with N) on the  right of the 3D View. alt T to come back to its previous value.