Wordpress move Featured Image box from side to main column or anywhere!

wp-featured-image-box-change.php

<?php
add_action('do_meta_boxes', 'themeaxe_image_box');

function themeaxe_image_box() {

	remove_meta_box( 'postimagediv', 'Tiles', 'side' );

	add_meta_box('postimagediv', __('Custom Image'), 'post_thumbnail_meta_box', 'Tiles', 'normal', 'high');

}