You really ought to do the staircase of those haunted castles that have stairs running down as well as with some steps that are upside down. I know its hard to imagine what I'm reading, so I Googled for a picture of it and here it is:
Good to see that I´m not alone and others have to practise,too. It steams me up and inspirates me to really WORK a little on the subject. Perhaps we should all start buggin dA with an official deviantart drawing school.By deviants for deviants. This would also help building a "we-feeling"(as we call it in Germany)on deviantart.
Please, please do! I badly need something like this since I have very little experience in doing shadows in perspective. If you're also thinking of doing a tutorial about drawing buildings in perspective (shadows and all), please consider adding that as well. It's greatly needed by those of us who want to draw more than people and nature.
Hey, I confess that trying out to draw this perspective is AWESOME! And I recommend this is a good start to practice before you develop some more ideas about building up the roads, houses, cities, etc.