So I'm an Ex Anti But being in a different fandom changed my opinions on things. Basically I'm cool with shipping, why try police people's actions it's tiring, also uh I might do a little shipping myself. I want to make a side blog but I'm a bit scared too. Should I do it anyway?
I'd say do what you want!
I recommend it since you were an anti and if your main blog and suddenly starts posting ship content it could shock people who followed you for other reasons. And making a side blog for the specific fandom/ships makes it easy to organize your works!
But if you don't care what people think and just want to make the content you enjoy then post it on your main blog! People are bound to stay even after you join an another fandom and you could even make new friends!
It's okay to be nervous doing something new. But remember that antis aren't evil. They want to help and they have solid points doing so. If you ship respectfully and in a good manner i know you will be okay!