Be yourself, and don't try to be a great. It's good to get inspiration, to try new things or learn new ways to write. Essentcially, that's what roleplaying is. It's writing out a story, or what have you, for other's enjoyment. You're creating a book, so make sure to show off your proper English too. If you feel down and out, don't get discouraged, and don't be afraid to take a fall or beating. It'll be worth it.
Also, be original. Don't do whatever others are doing around you, especially if you have all these ideas. If you have one in your mind, no matter how stupid it seems, always take the chance....
Guess I got nuthin else.