This is insane! I'm blown away by the feedback and all the love this style suddenly gets and what this thread sparked. Thanks so much guys, you are awesome! =)
Your Hill Castle is really well done, Larb! Not really much I can critique here, probably only that you could try to hatch the corners a bit. I often to this, it helps to smoothen the transition between the walls and the space. I uploaded a pic to show you...

exmpl.jpg

Keep up the inspiring work!
Best wishes, Steffen