This is just like our WordPress Theme Conversion where we take either a current layout and convert it to work with Joomla! or we can take a Photoshop Design and create a layout from that. The one thing that makes Joomla! templates stand out more is how much customizations can be done. It is often recommended to send a homepage layout, article/blog layout, contact page layout, user login/registration (if needed), and desired layouts for any extensions you plan on using, such as VirtueMart.
Often times a multi-step approach is taken where the homepage and the article/blog layouts are done first and approved, then we move onto the next one; so there’s no chances of overlooking a layout by waiting until the very end to inspect.