Fun, mad chemist, I love it! Let me know what materials you have available there Suzie, including any substitutes for the gesso (acrylic) primer. The primer adds that necessary texture for your pieced fabrics to adhere to, as well, it also adds stability. Your paper-like fabrics look fine. When you iron them, use a steam iron, set on cotton. Cotton/polyester pressing cloths will work best, and will protect your iron, ironing board, and fabrics. Let me know when you are ready for the next step, and remember, when it comes to art quilting--the sky, or in this case--the floor is the limit!