Hello there, and welcome to the server!
When creating a faction, there are a few things you need to consider before doing so. First off, is your faction going to be Legal or Illegal? That being said, you need to decide what your faction is primarily going to do and what activities they will partake in. If you are creating a legal faction, your topic will be posted in
this section. If you are making an Illegal faction, it will be posted in
this section. Remember, you should follow the diagram above and not post immediately (see below). When creating a topic, you should first make sure that you read through the following rules:
Legal faction application rules
Illegal faction application rules
Once you have done so, I recommend you follow the diagram posted above. It is very detailed and shows exactly what you need to do to have a successful faction. If you maintain activity and good quality roleplay with your faction, you have the chance of getting it scripted and having it become official. This, however, requires hard work, dedication, and lots of roleplay (and screenshots) among other factors.
Good luck!