Yes. We would first need to confirm that your design team knows and understands how Magento works and what is expected in a final design. There are many Magento nuances that need to be understood and considered. If there is a clear understanding and agreement, then Rocket Web can take final PSDs and make a responsive Magento theme, install and test. We would provide some template PSDs to start with in order to make sure initial designs, sizes, etc are followed and the outcome is successful. PSDs for all the primary pages (homepage, category, product, landing, cart, checkout, CMS) would need to be provided for desktop, tablet and mobile.