I'll commend you for getting out and shooting something, it's not always easy to find the motivation at night and especially so at this time of year. Fair play to you.
As for the shot, in isolation I like the silhouetted church-like structure dead centre. However, knowing the location from others' images, I find it curious that you've not chosen to convey one of the most compelling aspects of the location: the structure's position on the reservoir shoreline. I think you could have done with exposing the whole scene brighter by a stop or so and adding some light of your own to the foreground. Either that or capturing a much longer exposure for the foreground and blending it in. Matt also makes a good point about orientation- with a portrait shot you might have got close to including Polaris and completing the circular star trails you've started.
Might bump into you, mate. Had been planning to visit 10 days ago after a job nearby but the location got switched at the last minute.