wordpress last all added get meta value by post id

Try this code. I will added order by modified by date. Hope is work

https://codex.wordpress.org/Class_Reference/WP_Query

$args = array(
        'post_type' => 'post',
        'post_status' => 'publish',
        'posts_per_page' => -1,
        'orderby'     => 'modified',
        'order'       => 'DESC',
        'meta_key' => 'picture_upload_1'
    );