A dio base is a pretty simple thing if you just go with a simple field or road like I like to do. Much more complex if you want to add buildings etc.
I just add some plaster (Durham's Water Putty is better if you can get it) to a cheap craft store wooden plaque. Add ruts while the plaster is still wet and when dry paint it with cheap 99 cent craft paints. Then cover it with glue and sprinkle on static grass.
BTW: I can't see your photos at all. Is it something on my end guys?