Katie McCampbell wrote:
Modeling? I'm not quite sure where to start.. I lack zero confidence in front of the camera and modeling is something I have always wanted to dabble in. I used to model for fun for a friend but totally have no idea how to pose anymore and I have a small portfolio but unfortunately I haven't updated it in years. Any advice?

As a photographer (and in general), I support people who are willing to try to do stuff that makes them uncomfortable.  Don't be afraid to fail -- our failures are more educational than our successes.

I have a friend who is a model & a photographer -- in her youth, she did tons of nude self-portraits, and eventually her self-portraits (nude or not) became world class.  Try it.

Also, this is an excellent excuse for networking.  Get to know your local photographers & models.  A year or three ago, I used my local network & hosted an "extreme portrait party" -- we had about five photographers over, I broke out my strobes, and we all took turns photographing each other.  The idea was to make unusual portraits -- not the sitting still with a fake smile in glory light; we were looking for action & movement and so forth.  Twas fun!

Bottom line -- go for it!

Katie McCampbell wrote:
Modeling? I'm not quite sure where to start.. I lack zero confidence in front of the camera and modeling is something I have always wanted to dabble in. I used to model for fun for a friend but totally have no idea how to pose anymore and I have a small portfolio but unfortunately I haven't updated it in years. Any advice?

Typically as "artists" we are more critical of our own work and ourselves than of others.  Hell, I am so critical of pictures of myself that I've been known to hide from my sister when she'd try to take candid pictures of me!
   
It's a matter of feeling comfortable.  It's also a matter of feeling at least somewhat in control.  Taking selfies is a good way to start, but finding someone you trust is even better.  I don't trust my sister not to post ugly candids of me on Facebook, but there are other photographers I do trust. 

Pushing yourself to go out of your comfort zone is a learning experience.  Try it, and if you find that you don't like it, well at least you learned something more about yourself.  If you should find that you really enjoy it, then that is a huge positive to enriching your creativity and your life!