Can sites made on CMS and someone else's template be part of a layout designer's portfolio?

Question

Layout

While working in one company (I was hired in my specialty, in fact I had a chance to do everything related to computers and other digital technologies) I accumulated a portfolio of sites made on Joomla, Prestashop, Wordpress. These are the usual information multi-pagers, and landing pages, and relatively crooked online stores. In the process of work, I realized that I like the layout, I began to study CSS + HTML in depth, at the same time I slowly get acquainted with JS and even PHP (I hope to become a developer in the distant future). I do my own projects in my spare time, I plan to design a couple of sites using .PSD templates, purely for the portfolio.
Question: does it make sense to show these same sites at the interview, the initial templates of which were not made by me, or will they just laugh at me? It turns out that there are no HTML changes on my part, there are not too many CSS either, but everything else is there, including customization, design, etc.
I'm counting on the position of a layout designer-junior.
Thank you.

Answer 1

Learn css and html normally, make a couple of stores with adaptability and try to get settled.

Answer 2

Of course you can't show it. There is no sense from this. They will only make you laugh and that's it.

Answer 3

The employer will want to look at your code and will have to dig into completely foreign left-hand templates to find your edits?