That's really nice. I like the choice of landscape. It reminds me of trips I used to take through the Sierra Nevada mountains.
My dad is really really into trains (Scale S-gauge, American Flyer, and O-Gauge.). He has an incredible collection that fills a large basement, with a huge layout in progress. It's really fun..been around model trains since I was a baby. I remember cutting railroad ties for the track, as it was laid like a real track with very small spikes. If I ever find a moment to get my tree up, I'm putting my pre-war Lionel set around it (with, thankfully, pre-made track).
You've made a lot of quick progress with this...keep us updated!