So yeah, the first challenge to experience being a sub is to find a trustworthy girl who likes being dominant sometimes.
I'd say to be careful with new girls who present themselves as being dominant or "alpha female". They can just be abusive bitches who won't respect boundaries and will take the play outside of the bedroom and disrespect their sub in public...
That said, being a sub can be really enjoyable. Personally, I'm into chastity plays with tease and denial. That shit makes me go crazy. I like to be used by girls for their pleasure, being tied up and softly tortured (including my dick and balls - CBT). Otherwise, I'm not into humiliating/degrading stuff like cuckolding, pegging (I still want to keep my anal virginity haha), hard ballbusting, etc.
I have one girl who is really good at being a dom as she's a bisexual switch and we have a lot of fun plays. It's even hotter during a threesome to be tied up and dominated by two girls.
