How do I make polar fleece pill so it looks a little like antron fleece? Thank you.?

The idea behind the antron fleece is that it hides seams. You won't be able to get polar fleece to pill that much. However, you can make it pill in two steps. Wash it with non-like fabrics, e.g., you jeans. Then put it in the dryer with the same non-like fabrics. And for what it's worth, furrier fleece products are readily available at the larger fabric stores. Good luck!