There is a list of everyones name in that room. There is also a number by those names. These are shaman points which you gain from gathering cheese, or dieing. If you are 1st in hole you get more points and less the farther from 1st you are.
To create a custom iSketch room, you just need to log on, but don't join any games. Near the top, next to the "studio" button, you will have the option. After going through a few settings, and picking a word list, you will create a room.