Add order metadata to WooCommerce admin order over

I am developing a plugin for WooCommerce. I want to override the order details template of admin. i have read about on https://www.skyverge.com/blog/override-woocommerce-template-file-within-a-plugin/ , but still I don't understand how to override the order detail template of admin. following is my code:

 if ( in_array( 'woocommerce/woocommerce.php', apply_filters( 'active_plugins', get_option( 'active_plugins' ) ) ) ) {
 if ( ! class_exists( 'Test' ) ) {
   load_plugin_textdomain( 'test', false, dirname( plugin_basename( __FILE__ ) ) . '/' );
}
}
class Test {
public function __construct() {
add_action( 'init', array( $this, 'include_template_functions' ), 20 );
add_action( 'woocommerce_init', array( $this, 'woocommerce_loaded' ) );
add_action( 'plugins_loaded', array( $this, 'plugins_loaded' ) );
do_action( 'woocommerce_admin_order_data_after_order_details', 'hello' );
}

public function hello() {
echo "order detail template has loaded";
}

public function include_template_functions() {
include( 'woocommerce-template.php' );
echo "template has loaded";
 }

  public function woocommerce_loaded() {
  }

public function plugins_loaded() {
 }
 }

$GLOBALS['wc_acme'] = new Test();

It's not calling the hook associated with woocommerce_admin_order_data_after_order_details.

Can anyone please suggest or share some example of editing the order details template editing via plugin. Please note that I am referring to the order detail template inside the administrator, where administrator can view the detail of any order from the list.

From my tutorial on customizing WooCommerce checkout fields this is how you'd display some extra order meta data in the Order Details metabox:

// display the extra data in the order admin panel
function kia_display_order_data_in_admin( $order ){  ?>
    <div class="order_data_column">
        <h4><?php _e( 'Extra Details' ); ?></h4>
        <?php 
            echo '<p><strong>' . __( 'Some field' ) . ':</strong>' . get_post_meta( $order->id, '_some_field', true ) . '</p>';
            echo '<p><strong>' . __( 'Another field' ) . ':</strong>' . get_post_meta( $order->id, '_another_field', true ) . '</p>'; ?>
    </div>
<?php }
add_action( 'woocommerce_admin_order_data_after_order_details', 'kia_display_order_data_in_admin' );

This assumes that you have collected the data on checkout and saved the data as post meta for the $order in question.