Hi LuckyJoe!
Looks great

Be careful with the washes....
I have now tried to "wash" my building and it seems that the mdf material absorbed most of the color which darkend the colors to such an extend that we are almost back to the same color as before the base painting

The effect is ok, but it was not what I had expected
I first tried with a water based wash on the top part of the wall, which came out very dark.
On the lower part I used artist oil-paint that I wiped off imidiatlely after applying it.
The mdf material absorbed the pigments so fast that I could not control the color shading.
After - Wash and oil

Before - Base spray painted

I will now try to add some drybrushing to lighten the colors...
regards
Thomas