Ok, as I have probably told you before, I really like the first screen. Using gongs instead of targets is a nice touch, and I really like the colors you chose for the custom pagodas. You really don't need to use much or any imagination to try to figure out what the track is supposed to be. That is definitely a good thing. Sometimes you see random odd pieces of track, and you are curious as to what they are supposed to be. So yes the first picture definitely looks good. You definitely acheived an oriental look.
I also liked the 2nd picture, though not as much as the first picture. Good use of jagged rocks, and the drop is definitely cool. One thing that I didn't like so much was the totally exposed station for the go-karts. I suggest covering it somehow. Maybe have the station actually in the wall. The "broken" wall would also look cool if you but a single pice of a chairlift through it to make a tunnel, so it looks like the mongols bombed through the wall. Or possibly make the jagged rock wall a little lower than the actual wall, and put ruins on either side of it. If you like it how it is right now, then don't change it, but it may look better if you play around with it for a little bit.