Vector illustrations for games

Over this next year, I am creating new vector graphics and animations for a series of educational games. I will need assistance with this long term project. I have hundreds more images like this one that I may need help with. If you do a good job, give me a good price and you are fast, I will hire you for many more. Here is the first image I need help with, described below: I have an EPS illustration of a mountain landscape with a road (currently 225 x 450). I need this scene to be expanded to 225 x 1350 as a background for the game. Please draw new assets / modify existing assets to make the scene look consistent and realistic. (Example: pay attention to the sky and apply a little darkening farther away from the sun.) I would like to add some variation to the scene as well by adding a lake in between the road and the mountain. Please keep the road straight through the whole scene. I have included an example ai file, I just flipped the images to make a quick example. You may alter the original EPS image as necessary. Be very good with layer management. Please provide final image in AI and EPS formats.