I’ve done a bit of that type of photography, but I’ve never had much luck. I would suggest setting your camera up with the 10-18mm, (you’ll want a wide angle lens no doubt) using a shutter speed of 1/30. Since you don’t have an intervalometer, that’ll make it kinda hard, because you will have to stay with your camera and take a new photo every time your exposure ends until you get some acceptable photos, which could very well take several hours. Use manual focus, and remember to focus the lens before the sun sets, as it will be extremely hard to focus perfectly once the sun gets dark. I would suggest having some foreground interest in your photos to make it easier to focus, and so the photo won’t be boring. Lastly, ALWAYS shoot in RAW. That will greatly expand your ability to process the photos in Lightroom.
Good luck! If you get some good photos, I’d absolutely love to see them!