I've been making my own sauces for a while and have tweaked and changed a lot until I found my liking.
Here is the basic where i started and went from there; about 5 more ingredients and a few mixture changes but still pretty much the same.
1 cup ketchup
1/2 cup cider vinegar
1/3 cup brown sugar
1 teaspoon worchestershire sauce
2 teaspoons Rub
1/2 teaspoon ground cayenne
12 twists fresh ground black pepper
1/4 to 1/2 tsp. crushed Red Pepper
At least 1/4 tsp. of Louisiana Hot Sauc