Initially I wanted to try my hand on somewhat realistic clouds with acrylics. That took about 7 minutes till I was bored with realism. :'D
This is the result.
It was still good acrylics practice though, so, that's ok.
And it was a lot of fun to just barf color onto the canvas. : D
A Luftschloss (directly translated from German to English) is a plan, idea or dream, which is impossible to realize. A pipe dream or phantasm.