Went for a photo walk with Leanne Cole and her friend Teri. Leanne is a very accomplished photographer, you can see her work here: http://leannecolephotography.com
One of the things I look for in evening photo walks is the deep blues one finds after the sun has set. There is a small time period before the sky becomes black and the glorious blue is available. Too early and it is a soft blue to late and it is black. Additionally one has to over expose by quite a large amount when photographing city lights against the blue otherwise the deep blue will be missing. Get it right and it looks like this.
Exposure of 6 seconds at ISO 160 F/5.6.
The other thing to keep the eye on is what is happening back towards the sunset. In this case a bridge very nicely lit against a deepening sunset, nearly into black. In this case I have converted to black and white because it then becomes a study of the bridge and not a fight between colours. After all the main subject is the bridge.