I suggest flying around as an independent character for a few months, get some RP going and get used to the systems and the RP that will be used in that faction. Let's take the Rheinland Military for example. When you see an official online, go and talk to them have a bit of RP maybe even ask them a question about something you aren't sure about. I have no doubt they will be willing to help. Remember the basic RP rules and build off of there and in no time you will soon become a confident RPer. As Ponge said it's not something that will change overnight and you will make mistakes, however creating an unofficial faction is a very demanding task as you can see with all of the questions from the experienced players of disco. You have my skype if you need to ask me any questions then send them my way and I'll try to do my best to answer them. On the other hand, if you are adamant about creating this faction then no one can stop you. If that is your choice then Goodluck and again any questions you know where to send them.
Edit: can we please try to keep positive comments about the ideas maybe contribute?