First, wash your hands clean.
Wash your hands with soap then rinse and dry your hands with a lint-free towel. Cleanliness is a must when putting on lenses!
Second, check that the lens isn't inside out.
Put the lens on the tip of your finger and hold it up to the light. If the edges flare out, it's inside out.
Third, hold your eyelids open.
Gently hold your upper eyelid with one finger, and carefully pull down your lower eyelid with your other fingers.
Finally, insert the lens in your eye.
Make sure that the lens comfortably settles onto your eye. Blink 2 to 3 times to help you do so.