This is what is called a kitchen garden. If you want to, you can raise vegetables and flowers together. You could use your flowers as a border around your vegetable garden. Some vegetables will even look good in a flower garden. Carrots would look good in a flower garden because of their foliage.
Peppers can also be a good source for decoration.
Another great idea would be to add a trellis. You can teach certain flowers and vegetables to climb. When you have decided the type of garden that you want, you have to decide where to put it. The best plan would be to put it close to a good source of water. It would be a good idea to have it where there are five to six hours of sunlight a day.