Towards this question, For Anti-sune, I put sticker on FL. Easy enough.
For Sune, I do the same(FL) except i kinda hold the cube at an angle when im finishing the second block i can see the R side of the cube aswell. So not technically a cube rotation. That way i see the case, then execute.
Waffles puts it on BL, then most algs start with FL, so you have to do a U', then execute.
Do you understand?