I did this project with the 4th and 5th-grade students for our Art to Remember fundraiser this year. It was a real success for most students. I was impressed with the final results and the kids were too.
The only thing that I would change about the way I presented this lesson was to make sure I mentioned that the horizon line must outlined and both the buildings and reflection of the buildings must touch the horizon line.
For more examples of this project take, take a look at my Art to Remember Google Folder. Below is the flipped lesson that I presented to my classes.