Hi Yoshi112,
I think you are off to a great start. If I might make a few suggestions, they would be:
1) use a few different textures so that the terrain does not look monochrome
2) possibly include some weeds/scrub/bushes/trees as the terrain near rail lines is rarely meticulously kept clean.

3) Keep up the great work!
It's also easier if you embed the picture link into your post. Otherwise, we have to click on the link to open up a picture. With imageshack, if I recall, you can just upload your picture, and cut and paste the first hyperlink and it should show up.
:wave:
Gisa ^^