output images from order.php

<?php 

$order = wc_get_order('18');
$items = $order->get_items(); 

foreach ( $order->get_items() as $item_id => $item ) {

    // Here you get your data
    $custom_field = wc_get_order_item_meta( $item_id, '_tmcartepo_data', true ); 

    //echo json_encode($custom_field);
    // To test data output (uncomment the line below)
    // print_r($custom_field);

    // If it is an array of values
    if( is_array( $custom_field ) ){
        // Iterating in an array of keys/values
		foreach( $custom_field as $key ){
			foreach( $key as $keyy => $value ){
				if (in_array('upload', $key['element'])) { 
					if ($keyy === 'value') {
    					echo '<img src="'.$value.'">';
    				}
    			}
			} 
    	} 
    // just one value (a string)
    } else {
        echo $custom_field;
    }
}


		 ?>