if they keep asking for more n cannot let you go away.

very simple, if he or she kisses you back and cant seem to get enough then you know u r a-ok

Well the correct method to kiss is one person takes the bottom lip while the other takes the top lip. If you feel the other person is into to kiss nice and intense then you knwo your doing a good job. :)
Best of luck. Practice with your fist by the way if your feeling insecure.

IF they love it then you'll know!!! Just act like you know what your doing!!! :)