Don't stop making maps!!! You see, there's already a LOT of maps on the server, and sure there's a lot of crap in it too. Because there's so many maps, the rules are pretty strict. It's hard to make a map which is good enough. Your map is alright but there is already a lot of maps like this. Like BinSlayer said, you can place objects in the world, and with that, create something original. You don't necessarily need to make a whole new world out of them, but you know - basically every route/road in the 'normal' San Andreas world has been used for races already. You can still use them, but make it more original / challenging / fun by adding some inventive stuff. A lot of maps get rejected, and it's really getting harder and harder to come up with inventive stuff that actually works and is fun to play too. But keep trying!