Thanks, Zorbas and all the others, for your positive responses.
You mention the lighting. Well, making the photos was a funny story. Because the model is rather large (64 x 64 studs), I could not find an appropriate place with white and soft background in my home. So I went out, to my garden, where there was just freshly fallen snow. Unfortunately, during the photoshooting, it started to snow again. That is why, you can spot some snowflakes (or their remnats) on some pictures.
This picture shows the 'lego photo safari'.