A little help to, hopeful, my first real giveaway

https://www.steamgifts.com/about/faq
As for creating a giveaway, if it can be sent anywhere, you don't need to worry about region restrictions. Basically, it should say in your gift library what countries you can give it to. Otherwise, I believe there's a thing about a price difference, but I'm not an expert, so I can't tell you that part. The FAQ answers this, but as long as it doesn't have 2 of those little stars (*), then it should give you level 1. If the giveaway has 1 star, that means only 15% of it will count. No stars means 100%, while 2 stars means no value. However, from what the FAQ (Which I really suggest you read it anyways to get a full understanding) says, you only need $0.01 to reach level 1 so even a 1 star giveaway should work. Hopefully this answers most of your questions, if not all of them. Keep in mind at least 5 people have to enter it, but if it's a level 0 giveaway you should be fine. (And yes, I had to edit this multiple times cause the star kept giving me problems ;-;)
(Edit 2: as jgr76 and APocketfulofStars pointed out, it looks like your game is a 2 star, which means no cv ;-;-;-;-;)

here's a list with each level and how much cv you need https://www.steamgifts.com/discussion/XaCbA/

if you're in a region-locked country you can only send steam-gifts for that... region.
your store price also limits who can redeem your gifts. the winner of your giveaway can't have prices in their steam store than yours (it's ~10%), in your case being from Brazil means you can only gift to others from Brazil (there are exceptions with some games that have almost the same price in other SA stores, but it rarely happens).

if you want to gift ROW games, buy keys from resellers like humble bundle.
just be sure to check the keys aren't region-locked (it happens with some developers and publishers).

so, in short, region-lock your giveaways to BR, or buy ROW keys from other sites. =3

Good on you for picking a game people might actually want for your first gift!

1) When you're entering the name of a game on the giveaway creation page, there will be one asterisk next to the game if it's been bundled or severely discounted, which means you'll get fewer CV points (15%). You'll get none at all if it's been given away for free, in which case the game will have two asterisks.

Unfortunately, I checked the game you picked and it was given away for free at some point, so it won't get you to Level 1.

2) Games rarely have region restrictions unless they're AAA, but you can check by putting the game in your cart and pretending to gift it. The Steam page will tell you if it's restricted. You can read more and see examples on the Steam FAQ here.

I don´t know about the region restrictions, but I Distraint is a no CV game, meaning it won´t give you any level progress at all. When creating a giveaway if next to the game name it shows a star it means it has reduced CV, if it has 2 (like in this case) then it has no CV at all.

Another good way to hit level 1...just go buy tier one of one of the latest Humble Bundles or a bundle on Fanatical. They're filled with pretty good games and are cheap (sometimes the first tier is only a buck). You'll be able to level up fast. I have just over a year under my belt around here, and am more than halfway to level 9. Now, I'm a key hoarder and you shouldn't goal yourself with following my example, but it's actually pretty easy to make, say, level 5 by just being judicious about keeping an eye out for inexpensive bundles with good game value.

And, of course, as you level up, you get access to a lot better giveaways. So, being generous definitely pays off.

Welcome, and good luck!