Book pages flipping

https://videohive.net/item/turning-page ... ok/1868880
https://videohive.net/item/the-hand-is- ... k/13102387
If I have a similar shot and I need to change the text/picture in one of the pages how can I achieve it? I'm having trouble figuring out how to do the displacement of the page/paper. Obviously I can make it flat but how to make it bend like that?
https://videohive.net/item/the-hand-is- ... k/13102387
If I have a similar shot and I need to change the text/picture in one of the pages how can I achieve it? I'm having trouble figuring out how to do the displacement of the page/paper. Obviously I can make it flat but how to make it bend like that?