I built my first MOC using Lego-compatible Building Bricks (German: "Klemmbausteine"). I saw the inspiration and main baseline in a photo by a colleague on LinkedIn where they had built a model of our skyscraper office building. Having not played with Lego bricks for a long time, I gave in and tried to build something similar to the photo.

But first, the result:

For some reason, I did not remember the premier modeler, LDraw, so I went with the 3D builder offered by Mecabricks. The builder works fairly well, but you cannot save/export your model without signing up.

After being satisfied with my rebuilding after the photo, I manually created the CSV import for upload with MOC brick store. The upload failed to match discontinued parts with their replacements or unavailable colors, so I had to do some manual replacements in my CSV import. The import also did not allow for easy checking of which parts were unavailable, so I had to do the complete order manually, working from my CSV file instead of uploading the CSV file. The shipping was roughly as expensive as the blocks, but that's expected for something coming from China.

This ended up with me mis-ordering one brick type. Luckily I ordered one more than needed from every brick type so I still could make things work in the end and I am happy with the final product: