Apprentice School first time building a small panel

The teacher just gave us the equipment and told us to try building it the way it was described in the worksheet. It was my very first build so its not the nicest, cleanest but it worked and we could do measurements at the end. It's a standard single flat three phase panel, each phase 230V and 400V between phases.

I'm a first year industrial electrician apprentice working at our 16 Waterworks for my city.

here's a picture with all the covers mounted.