Add WooCommerce custom order status icon

wc-custom-order-status-icon.php

/**
 * Adds icons for any custom order statuses
 * Tutorial: http://www.skyverge.com/blog/changing-woocommerce-custom-order-status-icons/
**/
add_action( 'wp_print_scripts', 'skyverge_add_custom_order_status_icon' );
function skyverge_add_custom_order_status_icon() {
	
	if( ! is_admin() ) { 
		return; 
	}
	
	?> <style>
		/* Add custom status order icons */
		.column-order_status mark.awaiting-shipment,
		.column-order_status mark.building {
			content: url(/wp-content/uploads/2014/10/CustomOrderStatus.png);
		}
	
		/* Repeat for each different icon; tie to the correct status */
 
	</style> <?php
}