Cloaked in Shadow (4pt Flaw)
The shadows come to you even when you do not call them, wrapping around you like cloak in constant motion. This makes you stand out in a crowd, and you can no longer pass for "normal" even when you so wish. Other Cainites may well avoid your company, being discomfited by your strange affliction. Lasombra in particular find you unpleasant company because your inability to master your shadows demonstrates a failure of will on your part.
Marked for Death (2-5pt Flaw)
The Courts of Blood have found against you and at least one fledgling is now hot after your blood. While you probably can defeat this threat on your own, the wait is maddening. Furthermore, there is the implied insult bound up in the court's decision--your peers obviously feel that you are incompetent and need to be replaced. After all, even if you defeat one would-be diablerist, there is no guarantee you won't be hunted by a second, by a third.
The point cost varies depending upon the strength of the Cainite granted permission to hunt you, the conditions laid upon the hunt and whether or not the Court has seen fit to inform you of your current status.
Religious Prohibition (2-4pt Flaw)
Taken from Hebrew or Islamic stock, you grew up strongly religious. Part of that religion, however, is a dietary restriction forbidding you to taste blood. Even animal blood is forbidden to you by law, and you find yourself racked by pangs of conscience every time you feed.
At 2 pts, you simply restrict yourself to feeding on animals or blood that has been drained by a ritual butcher. At 4 pts, you abstain from feeding unless it is absolutely necessary (3 blood points or less), and even then you may well fall into pits of self-flagellating despair.