I very much enjoy feedback on my projects, be it just thanks or suggestions on improvement. You're also welcome to send me any questions that you like, I always try to do my best to answer them.
The best way to contact me is by e-mail. You may write in Swedish, English, or Portuguese. My e-mail address is email@example.com.
If you want to share the information with the rest of the community then you may do so in the forums over at GDNet. I personally frequent the forum daily but the entire community may also be able to contribute there.