There are lots of ways that you can increase the value of your car and get top dollar.
1. Wax it.
2. Clean the wheels.
3. Get all your papers together. Be ready to show the ownership history.
4. Make the simple fixes to idiot lights and bulbs etc.
5. Consider paintless dent repair.
6. Consider paying a detailing service.
7. Know your facts about the current resale value of your car. Try these sites:
kbb.com
edmunds.com
truecar.com