Thank you for using our theme! If you plan new projects we would also draw your attention to our XStore theme https://themeforest.net/item/xstore-responsive-woocommerce-theme/15780546
Unfortunately, Royal theme does not have option to apply different headers for the different portfolio projects (XStore theme has such option) and if you want to implement this for Royal you need to submit additional customization request to WPKraken team.
Or if you just plan to start the project we are ready to exchange Royal to XStore theme that has this option.
