Hi matur61, that type of model is quite difficult to produce in MoI. Like Andrei mentions above some people do produce that type of stuff in MoI but it requires a lot of persistence and steep learning curve.

The main tool to use is sweep and to try and build one sort of "tendril" of the shape at a time with different pieces that stick through each other rather than trying to build the whole thing all in one single go. Like for example you probably won't want to try and draw the full border outline and try to start with that, you need to draw some curves along the outside of each different section and sweep them.

It's overall more suited for a polygon modeler, and you might initially try one of the brush-stroke displacement programs like ZBrush or 3D-Coat.

- Michael