Why cant I make my self cum?

eeerrrmmm ile try from what women have told me the best way is a vibrator or if your not into that then get a guy to do it and tell him to google the tonge tornado or if you just want to do it yourself then make sure your alone rubb your self slowly wiv your nickers on until you feel your self wet then suck on your finger and make sure you get a lot of surleiver (sorry if I spelt it wrong ) on your finger the rub your self round your clit then put it in you but not a lot pull out the put it in agen but deeper and just keep doing this think of a fantasy while you do this and rub yourslef while you do this with your other hand keep doing this it should work if not then ask a friend whos got experience dont be shy your gunna have to know this for the future lol hope this helps ;)