Invoices and credits template upload/design

Greetings, 

I produce weekly invoices for a client and currently use a workaround to export invoices from the 'invoices and credits' screen onto a Word template in order to send to the client as I haven't had a lot of luck with Sage report designer in the past. 

Can I please get some suggestions on a simple way to import my Word template into the Sage Report designer or work to that effect?

Thanks

Joe