Series 3D-W they are 3D a bit puffy, not like other flat sticker. As the stickers have been made as thin as they can to get the better effect, so this 3D ones are more difficult to peel them off, need extra care to do it.
What you need to do, if you have tweezers, peel from the edge and slowly to the middle, and move tweezers to the middle and keep peeling carefully and slowly to the end.

PS: If it start breaking when you are peeling, stop and move to the breaking side to peel.

sheet size: 62mm x 52mm

clean your nail before you put them on

carefully peel the one you want and put on your nail

for longer lasting finish with top coat.