How can i jump 6 post

Hy ,

i want to display other 6 post from my category , not first 6

my code is

<div class="stiri_fr1">
<?php $my_query = new WP_Query('cat=2300&showposts=7'); ?>
<?php while ($my_query->have_posts()) : $my_query->the_post(); ?>
<div class="cinema_img">
<?php $homethumb = get_post_meta($post->ID,'homethumb', true);  ?>
<img src="<?php bloginfo('url'); ?>/wp-content/uploads/<? echo strtolower($homethumb); ?>.jpg" width="60" height="60" alt="" title="<?php printf(__('%s', 'kubrick'), the_title_attribute('echo=0')); ?>" />
<div class="cinema_titlu"><a href="<?php the_permalink() ?>" rel="bookmark"><?php the_title();?></a>
<span class="cinema_continut">
<?php the_excerpt_reloaded(20, '<a><p><ul><ol><li>', 'content', false, '', true);?>
</span>
</div>
</div>
<?php endwhile; ?>
</div>

who knows please post the code here please

my site is https://www.filme-imdb.com
Thanks in advance