Mine Cart Ride

Im new to blender and after completeing\attempting most of the bginners tutorials on the blender site I have began my first project.
I have taken the mine cart tut (btw thanks to whoever wrote the tut i found it verry helpful:)) and have decided to expand it by applying all of my current knowledge(and stuff I learn along the way) into the one belnd file. Hopefully by the end of the project I will have a cool movie to post for all to enjoy and enough experience to move on to greater things.:cool:

Here is a render of what I have so far. I only just started it today and plan to be working on it when ever I have free time (between school and home work) and I am open to any ideas or constructive criticism.