Virtuemart order page and order administration project

We have two tasks to be done in virtuemart system as we have the project where we need to modify virtuemart per client requirement. TASK 1 – order page layout per client explanation. As we use the virtuemart system the client need to have the order page (cart) per they layout for each orders to be done. As well the same layout should be for the e-mail of order page and admin confirmation email layout. TASK 2 – In virtuemart order list in administration we need to make some modification so that client can write text bellow the each product with explanation of the product and after he save it the pdf will be generated (we will use Advanced Virtuemart Invoices or some other) and the user will recieve update email with pdf and updated explanation and text. We will provide full explanation of the project in steps!