Ok, this is my progress with Piero who until now rather looks like badly treated chicken 😁:
The perspective is driving me crazy: Front view and side view look good, but the three quarter view from behind is awfull. It's probably the same as with the famous railway tracks that converge towards the horizon due to the perspective distortion. What looks in front view like a shift towards the left is rather a shift to the right in Blender's right side view. But nevertheless I don't get it right allthough it looks so easy in Kent's video.