creating a widget

hey guys been trying this for awhile now, finally got my review section of my site running and want to create a widget that lists 8 random reviews in my sidebar.

I’ve tried a few tutorials on making a widget but i cant get it to work with my query for the reviews.

heres the code for the review list

<div class="review-list">

<h2 class="review-titleblock">Reviews</h2>

<div class="score">

<?php $args = array(
	'post_type' => 'reviews',
	'orderby'   => 'rand',
	'meta_key'  => 'mymetabox_Score',
	'posts_per_page' => 8,

);
$query = new WP_Query( $args ); ?>

<?php if ( $query->have_posts() ) : ?>
<?php while ( $query->have_posts() ) : $query->the_post(); ?>

<div id="review-item"><div class="post-<?php the_ID(); ?>" <?php post_class(); ?>>

			<a href="<?php echo the_permalink(); ?>">
                                <h4 class="review-list-title"><?php the_title(); ?></h4>

			</a>
      <div class="review-scorebg"><?php gamergreed_score(); ?></div>
</div>

		<?php endwhile; ?>

<?php wp_reset_postdata(); ?>
<?php else : ?>
<p><?php _e( 'Sorry, no posts matched your criteria.' ); ?></p>
<?php endif; ?>

</div>

</div>
</div>

can anyone help me add this into a widget i can add into my sidebar?

thanks in advance!