How can I please my self as if it was my boyfriend doing it?

Ok so..I'm 18 years old and am currently in a long distance relationship with my boyfriend for almost 3 years. And let's just say it's been a while sence we have had sex and I have never masturbated before.. so I was wondering if any one could give me some idea on how to do get the same feeling as if I was having sex with him.
P.s. I havnt ever had to do this so anything helps right now

Don't worry. Do u have a sex toys or something that u can fill up ur pussy?? How much is ur boobs (tits). Rub real hard inside ur pussy using some tools or u can use ur finger. Start with 1 finger slowly rub it and increase ur fingers like 2,3 or may be a hand. In the world people don't have sex only with dicks. In some parts people enjoys using fingers the modt than dicks. Size doesnt matter but rubbing motion matters. Enjoy..;-)

Here's two videos of me singing - I just want your opinions! Whether I can sing or not? How well if so And any tips advice or songs you think would suit my voice thanks! The link is http://youtu.be/5F4zHaBSahc and http://youtu.be/8QYtWXnITsw thanks!