Yeah, contacts are hard to get used to using. When you first get them you need a mirror.
Here's a tip: You can try holding your eye open with the hand on the same side as the eye you are trying to put the contact in(right eye...use right hand just in case I didn't make any sense)
by holding your upper eyelashes with the index finger and your middle finger to pull down underneath. Then put the contact on the other hand. This at least makes sure your eye is open.
If it keeps falling out sometimes by looking side to side or up and down positions the contact on your eye.
Sorry if I wasn't able to explain that well.
All it takes is practice.
Dov'`e mia luce, mio cor?