Dark Alley beside the Wosk Building
I became more practiced with my tilt-shifter when I went for lunch yesterday. My buddy Dylan got the technique down. Shoot with both hands on the bellows and work it like an accordion.

I got into a discussion with other people who have created basically the same tilt-shifter using incompatible lenses and home-made bellows. Take a look at their designs here on Flickr on the DIY Photography group.