Take a sheet of white paper and cut it into a 21x21cm square.
Colour the whole sheet with yellow pastels and brush over it with blue acrylic paint. This will give a variation in colours and add effect to your work.
Take a piece of newspaper, scrunch it into a ball and stick it in the centre of the sheet. Paste your star onto the newspaper ball to keep it in relief.
To enhance the brilliance of the star, take a toothpick and scrape the blue acrylic paint around the star. This will result in the yellow of the oil pastels being able to show through.