Horizontal Changeup Movement

So I have finally decided to work on developing a changeup and have got down a circle change, I don’t have a ton of control if I’m trying to get it to sink llate and bunch like Felix Hernandez change. But it goes decently hard and I can throw into righties and away from lefties, but I need some more movement.

I really like how Kelvin Herrera’s changeup works, he can get it to sink,but also it appears to be going into the plate and then dives away into righties away lefties at the last few moments.

(The last pitch is for sure a changeup)

Not that I will be throwing them like this, but does anybody know how this kind of movement is created?