Not sure there’s much improvement to be done. I like it a lot.
The only things I’m not too sure about are "About Me" picture or the color of "ground" in "background" and "taught" in "self-taught" on that page. It’d be easy to miss those words with that background.
Great design, you definitely have the touch. Just a few comments
I think there is too much empty space above the header, it makes me scroll :evil: and I hate scrolling to see your content.
The Navigation could do with a little more contrast, the text on the similar coloured background is very difficult to read. As I always say not everyone is 20 years old with perfect eyesight…
I don’t like the About Me "photo" either.
Otherwise great job, and your other sites in the portfolio look good too.