First, you’ll need to look for reference photos or a sewing pattern. Then, get the necessary materials. Break the costume down into small portions, like the sleeves of a shirt or the bodice of a dress. Take the child’s measurements, cut out the pattern, then piece the costume together. Alternatively, you can book a costume maker near you. That way, you won’t need to stress out about your child’s outfit, and they’ll still have a chance of winning “Best Costume”!