This is always a favorite winter project.
My students fold their paper in half and draw a landscape image on the top half using water based markers. When finished, they paint the bottom half with a generous coating of water. They fold the top half over the bottom to create a mono print.
When the mono print is dry, we made small figure skaters or ice hockey players in action poses to cut out and glue (collage) on the bottom half of the picture which now looks like a reflected skating pond. I usually do these with second grade.