Apply shells to cross. Spray with clear acrylic spray. The rice becomes somewhat translucent. Water Knead 7 - 10 min., until smooth and firm like pie crust dough. Roll out and cut with cross-shaped cookie cutter.
Place crosses on foil-lined sheet.
If dough puffs, pierce puffed area and reduce to 250 . Fold a piece of black construction paper in half. On one side cut out the shape of a butterfly, on the other cut out the shape of a cross. These shapes should be large enough to fill the space and still allow some border on either side. On a piece of white construction paper have the children paint a watercolor rainbow.