Oh, and for the record, the reason I didn't initiate conversation right away and asked you guys to do it is because you have the power to control that. If you want to start off with a lie, for instance, you'll roll a bluff check (aka, me rolling a d20, I promise to be fair). Right now you have no modifiers as you start at level zero in everything. New skills will be added to the main post under the HP as they are experienced (i.e. if you run into a locked door and try to unlock it, lock picking will then be a new skill you'll have under your mugshot).
Leveling up is simple. Every time you do something to related to that skill, whether you succeed or fail, you get an experience point. To reach level 1 you must gain three experience points. Each new level will add one more point required, so level 2 will take four points, level 3 will take five points, etc (and after you've gained the amount needed for a level, the counter starts over).
The modifiers work where whatever level you are in that specific skill, you can add that many points to the dice roll (or rather, I'll keep track of it for you). Rolling a d20 means that if you get a number lower than 10 the action fails and higher the action succeeds. So if you're a level three, and you roll a 9, you still succeed in the action as you have a +3 modifier, so you would technically roll a 12. Your levels max out at 20, as that means even if you rolled a zero (which is impossible) you'd still succeed.
Oh, and if you roll a natural 20 (or rather, if I roll you one) you get two experience points added to your leveling rather than just one.