Well the way I generate those photos seems to be more complicated than other people might be.
There'll be at least 2 steps for every pic and each step will have more than 100 attempts (depending on how lucky you are),
what you'll have to do is to
work on only one thing at a time,
let's say we're taking this photo for example:
1. Try to remove the top, there might be lots of attempts before you finally get an usable result, so you'll need to download every pic you consider usable.
After a few tries, I decided to take these two.
2. Since removing bottom in this pic might have weird results because of the position of her arms, I'd quit doing such thing,
therefore, I'll going straight to remove the weird edges next to her arms in the first photo.
3. Remember her hair? Let's add them back to make it look natural.
4. Before posting them out, you should check if there're something more you can do, for this pic I found out the area next to her right arm is not clean enough.
For generating this one there're 3300 attempts in whole process,
I prefer to set batch count to 10 to find the best result faster.