I will be honest in my feedback. I will only focus on the negative.
UX of the site: My first impression was blank. I had no idea what the site was about and as I kept scrolling was completely lost. And no, I didn't forget to read the text... you shouldn't expect your visitors to have to need to read a book to find out some info about you that you could have summarized in one sentence like this example: "I do website design".
UI of the site: You kept a constant theme which was good but maybe I would try to do some more of flat colors on the site. But this is just personal preference. Other than that the UI was pretty solid and remained consistent. I would play more with the text though. It looks pretty generic.
I would also lay out the footer to be more friendly... it was very confusing on how it was layed out. You have two choices: either go traditional and do something like Webflow did where there are just vertical tabs for prices... or create something original but make sure it is easy to read and UX friendly.
Other than that... you're good! Don't think I didn't like the site at all... I was focusing mostly on the negatives and not the positives.
As a final suggestion in general try to unclutter the site and go flat. That is the new trend. Here is an example of my old site and my new recent site where I cleaned up all the extra clutter and focused solemnly on UX. Hopefully the examples will "inspire" you or at least give you an idea of what I am talking about.
Old Site here.
NEW Site here.
Hope this helps!