1. eat 5-6 meals a day
2. do cardio at least 2-3 times a week
3. lower your fat intake (1g of fat = roughly 9 calories, 1g of protein/carb = roughly 3-4 calories), so fat ultimately leads to much higher daily caloric intake
4. moderate your carbs. As someone mentioned earlier, take it easy on the pasta and the bread and such. You can still have it, but use wheat instead of white
5. eat lots of protein/meat
And don't worry about bulking up, you won't. It's virtually impossible for a woman to gain a significant amount of muscle mass without steroids, especially with only a year of training.