Your eyelashes are now inside the curler. Make sure to place the eyelash curler in an upright position. Its curve should be facing outwards.
Now carefully and without applying much pressure, close the curler on your eyelashes and squeeze gently.
Now gradually turn the curler in an upward direction. The curve of the curler should be aligned with the crease of your eyelid.
Keep the curler in this position for a few seconds. Make sure not to blink or move.