Is there anything wrong with this?

//Celebrities
// Our custom post type function
function create_posttype() {

    register_post_type( 'celebrity',
    // CPT Options
        array(
            'labels' => array(
                'name' => __( 'celebrity' ),
                'singular_name' => __( 'celebrity piece' )

            ),
            'public' => true,
            'has_archive' => true,
            'rewrite' => array('slug' => 'celebrity'),
            'menu_icon'           => 'dashicons-universal-access', // picture on the left [pic]Portfolio
        )
    );
}


flush_rewrite_rules();
//Music
// Our custom post type function
function create_posttype_music() {

    register_post_type( 'music',
    // CPT Options
        array(
            'labels' => array(
                'name' => __( 'music' ),
                'singular_name' => __( 'music' )

            ),
            'public' => true,
            'has_archive' => true,
            'rewrite' => array('slug' => 'music'),
            'menu_icon'           => 'dashicons-admin-media', // picture on the left [pic]Portfolio
        )
    );
}
flush_rewrite_rules();
function create_posttype_professions() {

    register_post_type( 'professions',
    // CPT Options
        array(
            'labels' => array(
                'name' => __( 'Professions' ),
                'singular_name' => __( 'profession' )

            ),
            'public' => true,
            'has_archive' => true,
        )
    );
}
// Hooking up our function to theme setup
add_action( 'init', 'create_posttype' );
add_action( 'init', 'create_posttype_music' );
add_action( 'init', 'create_posttype_profession' );