People tend to make me the same kind of questions a lot, so here's a FAQ with me answering some of them
1. What programs do you use to make pixel art?
Most of the time I use Photoshop, and some times additional software like Pyxel Edit (it's great for tiles).
Honestly, the tools you use are less important than how much you practice. I used to make pixel art on MS Paint (even while working on Terraria, early on), and it works on the same way. The difference is the tools you have at your disposal, which can make the process faster and more practical. I could stop using my current tools at any moment and start to use other tools if I felt like they were more suitable for myself.
2.What programs do you recommend/any tips you can give me on how to start doing pixel art?
Two great free Softwares you can get are Graphics Gale and Pyxel Edit. I never used Paint.net, but it seems to be a good option as well. Usually paid version of softwares like that are very cheap, so if you can afford them I recommend doing so. From the paid ones, Aseprite is specifically tailored for pixel art and is very popular among pixel artists and game developers.
My first tip is: If you like doing something, keep doing it and you will be getting better over time (I'm trying to improve everyday!).
Regarding pixel art, I think it's good to be in touch with old video games, or even new "retro-games" to get references on how to make certain things or how some things looks like in pixel form. Be observant about them.
Also look for tutorials to learn technical bits like shading, aliasing and other common pixel art practices.
Last but not least, here's a recommended source for everything mentioned above: http://pixelartus.com/post/126605275911/the-pixel-art-mega-post
3.Can you give me spoilers of game X?
Most likely not.
4.I have a suggestion of something you can add to the game...
Try to use the Player Suggestions
board for that!
5.Is your avatar character based on character X from place X?
Probably not. This character was based on some design ideas I'm fond of, and it's not a particular reference to anything. It is more reminiscent from an original character I created a couple years ago. It might be inspired a little bit by the design of the famous plague doctor figure, but I didn't intended it to be directly related to that.
6. Are you Brazilian?
Sim! That's why my english might suck sometimes. Sorry for that.
7. How do you pronounce "Crowno"?
I don't know, whatever you think works the best. I think I pronounce it like "Crow-no".
8.I saw this picture of a game/art on your social media. Is that Terraria?
If it doesn't look like Terraria, it's not Terraria
I always played around with gamedev for fun, so I'm almost always doing something on my free time. Those things are particular and I do them as a hobby.