7. Plot Twists and OOC
Have one or two plot twists per roleplay, things you do not reveal to the reader and other roleplayers straightaway. This increases the fun and suspense of the roleplay. If it severely affects your fellow roleplayers, though, you can prepare a hint in advance, tell them that a plot twist is coming up. Of course, it is very handy to discuss plot developments in the OOC thread, or through chatting, and not just use them to recruit roleplayers.

8. Realism
This may be a tale, but even tales have to be realistic at times. It is next to nil a probability that your character will defeat tens of thousands of enemy soldiers without breaking a sweat. Create an injury, at least make your character frazzled. Nobody can go through an incident without becoming the same afterwards.

9. Fantasy Roleplays
For a good fantasy to work, you cannot just have a fantasy world and get on with it. You need a goal or an aim in mind, and use the fantasy environment to the utmost. That is why you have a fantasy roleplay instead of a modern one, am I right? As for the fantasy world, it should have a comprehensive history to it. Cities do not make themselves for nothing. Droughts have a reason for starting. Think them out.

I shall end off here for now. Anyone else is welcome to contradict my points, or add some of your own. Our aim is to benefit roleplayers new to the trade, after all!