Hmm… It’s a bit tough to explain.
Here are some typography design guidelines I personally refer to when designing a site:
Referencing some points from those links, I would say (IMHO) that your leading is a bit too loose (item 2 from second link) and the visual hierarchy is not strong enough (item 14 from second link).
I would also say that, while the white text on the blue jean texture is more readable then the dark yellow, I still think the texture makes reading the text hard on the eyes. I would suggest using maybe a solid color background with the white text? Perhaps add a footer at the bottom of the page and use the jean texture as the background for the footer? Maybe find a color scheme that compliments your logo’s blue color?
I noticed there was a hover-over interaction on the portfolio image which widens the image on hover. The other images do not share this interaction, so it feels inconsistent. Also, when the image widens, some of the text in the image gets pushed off the edge of the screen, which has a negative appearance to me.
Oh, also the dark yellow color is still set as the text color on your mobile nav button drop down.
Anyway, there are some things to mull over. Let me know if you have any questions on these critiques! 