Change Default Empty Cart Message

The default empty cart message does not match our site at all. I want to replace the sad face and link with a custom message. I’m using the Storefront theme with a child theme (storefront-child).

I placed the following in my functions.php and nothing happens.

remove_action( 'woocommerce_cart_is_empty', 'wc_empty_cart_message', 10); 
add_action( 'woocommerce_cart_is_empty', 'custom_empty_cart_message', 10); 
function custom_empty_cart_message() {
    echo '<p> Your cart is empty. </p>'; 
}

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