@roger said:

Good start but I have some suggestions. People could fall off the edge of the world. Also the canales seem pasted on as there is a line of white pixels surrounding them. The line of trees do not seem to recede according to the building's perspective. Some foreground framing could add some character to the image by enhancing the illusion of depth.

thanks Roger, this was a job that I made 5 months ago, but I'll keep your suggestions on mind for future rendereings, i apreciate your comments.
Note: my english is not very good, sorry if i have errors in my writing.

Modeled in sketchup rendered whit vray. hope you like it.