Ways to get my gf to try new positions??? any ideas?

ok so me n my girlfriend have been going out for about 9 months. she is my 2nd serious gf and i'm her 2nd serious boyfriend but i've been around the block more and have had sex with alot of other girls(i was a player). but i love her and she loves me. i'm 19 n she's 18. we have sex and then we cuddle but i wanna do a few more positions other than missionary. sex to me isn't that important in a relationship but i still like to have it and have fun but she's just full on missionary me on top or her on top thats it. i respect her comfort zone but i kno she'll have fun with some other positions. some of my friends have said she feels intimidated because i have had sex with so many girls and she's only had sex with 3 different guys(her 3 previous boyfriends). so is there anyway i can get her to try new things?? any advice or ideas are greatful. thank you