How to design a web portfolio?

Question

Portfolio

In our Internet, where customers are more private individuals than corporations, the picture often turns out: you make a website for a person with love, give it away, receive payment, put a link in your portfolio and support / forget it.
But there is a very thick layer of clients who, immediately after, call home-grown “SEO specialists” (less often, family friends), who instantly put their hands inside and soon change everything beyond recognition, if not to say complete shit. Well, it's certainly a shame, but the owner is a gentleman, there is a website - change it, I don't want to.
The problem crept up from an unexpected side: before ordering a website from me, the customer looks at my portfolio and sees all the horror made by someone else's hands. The customer is unaware that they were tinkering there after me. There are examples of work and they are terrible. The customer leaves.
Subject. What can be done to avoid such a problem?

Answer 1

Publish screenshots of exactly YOUR work, and clearly indicate that the project has already been delivered and you are no longer responsible for it.

Answer 2

Try to save copies of completed works / sites (their option before delivery) on your server / hosting, as they do, for example, popular site template sites such as templatemonster and the like. There you can always see a working demo version of the product, click on the buttons =)

Answer 3

As an option, upload the layout to your hosting (on subdomains as an option) and put the main link to this subdomain, and a link to the site itself, if they ask why it’s like that there, but here it’s like that, you will answer when I offer to support people, they refuse (I think it's so simple), they start to fill in and some mythical things start happening to the site, so let's better you will pay extra for support, but for that your site will not turn into a poop!
PS If the site breaks down while filling, most likely it's not the customer, but the crooked layout ... When you make up, you must always remember that the customer will definitely put more than one picture in this block, but usually + 100500 pieces, all these nuances are necessary work out...