Keep it simple, read the rules, also simple details like the above can be the difference between no interest and 100 phone calls.
It's all well and good to sit back and say "If you're really interested you'll call" but at the same time you need to generate some interest in the car to start with. So pictures and details help ten-fold. Again, read the rules or leave 86DC. Simple.
Rules:
I'll leave this here for future reference.