Hi guys,
Thanks for your responses. I guess my introduction post was a little bit misleading. When I'm talking about designing this is more or less like modifying existing models. During the past few years I have bought a lot of official models and also some MOC building instructions. But none of them I built in the original way. Means I always found some points which I didn't like, or which I considered improvable and so I modified them.
So in the very end I'm not a real LEGO designer, but rather a tinkerer.
I'm mainly interested in LEGO Technic models such as trucks, cranes, crane trucks and construction machinery. I have several "projects" based on official and unofficial models and MOCs waiting to get finished (unfortunately I still have to spent some time for the job). For all of these I'm generating, parallel to the actual building process, 3D models in order to setup the concerning building instructions.
So nothing really special.
Greetings from sunny Bremen