step1: Choose the right size for your nails.
step2: Line up with the root of your nail, and affix while squeezing out air bubbles.
step3: File down any protruding portions.

If the product does not affix firmly to your nails, it is effective to apply a base coat before affixing.!


　
https://www.youtube.com/watch?v=MFf-WdR6Mv0&feature=youtu.be