Cities in the Astral

Remember very few details, but it was an interesting lucid in that I had watched a sequence and then attempted to steer the dream to allow me to experience the scene in person. The attempt sort of failed. I did manage to create on of the DCs and get the city to kind of conform to the layout, but when I attempted to walk from one place to another I just kept walking expecting to arrive at a lake. Someone mentioned the lake was that way, but I never got there.