Art Projects for Kids: Sailboat on a Lake This sailboat painting gives students a chance to make a reflection and try layering of color too regarding the background trees. 1. Draw the boat and sails. Add a horizon line. Make some zig-zag lines for two layers of trees. 2. Trace all the lines with a black permanent marker. 3. Use a white crayon to draw waves and a reflection of the boat. 4. Paint the picture with watercolors.