Duidelijk veel beter nu 👌🏼

Hi Rickie, that makes quite a difference. If you go a step further and show where the light source is located, it will make another strong improvement. Show the sun lit side of the building, the shaded side and the cast shadows. Give your drawing some bold contrast in shading.😊

Rickie, this is a big improvement. Now try to make the light source clearer. Choose one direction for the light, keep the sunlit side of the building lighter, deepen the shaded side, and add the cast shadow. That stronger contrast will give the perspective more depth and make the forms feel more solid.