To make leaves for your dollhouse moon or moth orchid, use a flat artist's paintbrush and brush two oppositely curved strokes with varied watercolor paint on a section of your paper (see photo). The leaves should be roughly 1 inch to 1 1/2 inches (2.5 - 3.5cm) long. Use your darkest color of green to draw a thin line down the center of your rough leaf. Paint the reverse side of your paper the same way. If you are using watercolor paints, you can add a bit of gum arabic watercolor medium to your paint to give it a shiny finish which will resemble the waxy shine of orchid leaves.
When your paint has dried fully, use your curved scissors to cut your petal into a narrow strip, roughly 1/8 to 3/16 inches (2 -3mm) wide, leaving the tip end rounded, and cutting the base end to a short narrow stalk (see the trimmed leaf in the center of the photo). For each orchid plant you will need 5 to seven leaves.