Tokyo at night

[yakkosmurf]

I'm fairly new to learning about photography. On my recent trip to Tokyo, my point and shoot camera gave up the ghost on the first day. I went out shopping for a new camera, and my wife and I settled on a DSC-R1. I took this from the top of Tokyo tower, so it was through glass. I had the shutter speed set at 3 seconds, with the camera taking care of the aperture for me. Any suggestions for how to make these shots come out better? (Other than getting a tripod, which I'm shopping for)