J,
I visited your first site www.joaonauman.com. I'm going to critique base on my design taste and not the technical side of making the web-it's not my specialization.
At first, when I click your site, I got a clean impression. Although design is very simple, I still get attracted to click to your links. It's very simple and easy for me to follow your site. (that's what we need right?)
Overall, your site is successful. Just play with the FONTS, and LAY-OUT or color...sometimes a good space would give a good design too.
Let's go to most important link of our site. Pretending to be a client here....
ABOUT-----your about is okey, Clean and direct. I also like 2 languages. Maybe, just give some space to separate the 2.
Now..I'm goint to buy and contact you....CONTACT:
I suggest Your email should be standard using joaonauman@gmail.com
and not using this...(joaonauman(at)gmail(dot)com)
remember the simple and effective is always works best.
Congrats and Cheers!