As long as you know the basics everything is fine 
However keep in mind that some spoilers might happen.
However keep in mind that some spoilers might happen. 
RpNation
JPTheWarrior
Vampiress
That's fine
JPTheWarrior
Great 
Vampiress
I want to create my character. Can it be Clary and Jace's daughter???
JPTheWarrior
Hmm unfortunetely, the characters arent old enough for that yet
Vampiress
Awwww but that's the only OC I have made for mortal instruments