Well senpai, in Japan, usually refers to anyone who is older than you (or is in a higher rank in a company or at school) as a form of respect. But in this case it's used to see you as a role model. So for me, I can call you Jenny-senpai = v = Or Jenny-san, since you're older (-san applies to anyone older regardless of rank).

On the other hand, you can call me kohai, which is a respectable term for those that are younger than you or are less experienced in a particular area. However, you can't really use it after someone's name like senpai, so you use chan or kun instead.