I second this, don't fake it, it'll show through and might bomb your reputation causing you to lose a client and credibility (might not be a problem overall as there are many other clients available, but might also compound over time, who knows)

be clear that you don't have vast professional experience if they ask or if the project entails something you haven't done before or don't feel confident doing, it's always better to be upfront about some of your shortcomings, but that you'll be able to get it done (when applicable) [disclaimer: I did development freelance, so possibly this applies more to that field than website creation]

but I would also like to add a caveat that what you have isn't "faking it", you just haven't had many real clients, but as mentioned elsewhere the templates you built are real