function my_carousel_shortcodes_child ($atts , $content = null){
    $atts = shortcode_atts(
        array(
            "carousel_image" => '',
            "carousel_heading" => '',
            "carousel_detail" => '',
        ),$atts
    );

    $slider_structure_child = '<div class="single-slide">';
    $slider_structure_child .= '<div class="value-icon-wrapper">';
    $slider_structure_child .= '<img class="value-icon" src="'.wp_get_attachment_url($atts['carousel_image']).'" alt="'.$atts['carousel_heading'].'">';
    $slider_structure_child .= '</div>';
    $slider_structure_child .= '<h3>'.$atts['carousel_heading'].'</h3>';
    $slider_structure_child .= '<p>'.$atts['carousel_detail'].'</p>';
    $slider_structure_child .= '</div>';

    return $slider_structure_child;
}

add_shortcode('my_carousel_child' , 'my_carousel_shortcodes_child');