No worries, I'm happy to answer questions!
1. I took ballet when I was younger but it's been quite a few years since then! I'm planning to start up again with it in the fall, though.
2. I am
wearing pointe shoes for this cosplay, but they've been modified heavily to make them more practical for a day at a convention. Also, because I haven't been en pointe in years, I didn't want to risk an injury just for the sake of cosplay! So I deshanked them and also crushed the toe boxes. I posted a walkthrough of what I did here: [link]
3. If you don't have any training, I strongly recommend just sticking with regular ballet slippers! You can attach ribbons to them to give the illusion of pointe shoes, and you won't risk severely injuring your feet. Even with deshanking them, the pointes were still pretty painful to wear all day, and by that night my Tutu and I weren't the happiest of campers! So if you can get away with it, I'd just stick with the slippers.
I hope that helps! If you have any other questions please don't hesitate to ask!!