Overall I like it, but I think you need to fill the spaces where you don't have anything. At the top, you have the logo on the left, social links to the right, and a big gaping space between. I'm not sure what you could put there but I think it needs to be filled with something.
There's a little gap on the bottom right, too.
On the blog page, I think the articles should have some sort of divider, even if it's a 1px dotted faint gray line, it might sound like I'm just nitpicking but in my experience it's really helped.
I also think it would look better if the margins on the boxes were smaller, but I'm not sure. Hopefully what I've said is of some help.
It looks great though, nice work.