Hé. I got it.
Just copy the code bellow in your functions.php and you see now text and images in your nav menu.
#### code from https://blog.milandinic.com/2012/11/23/nav-menu-images-developers-guide/ ###
function md_nmi_custom_content( $content, $item_id, $original_content ) {
$content = $content . '<span class="page-title">' . $original_content . '</span>';
return $content;
}
add_filter( 'nmi_menu_item_content', 'md_nmi_custom_content', 10, 3 );
you can edit the span tag to get what you want.