Making Cake Mix better

Hi everyone. today, i took a box of butter yellow cake mix from betty crocker and made it in the style that i would a regular cake. It turned out way more fluffier than i did following the instructions on the box.
I didn't do anything special, except made a few changes on the steps!

 i doubled my recipe because i had to bake 3 dozens.

Ingredients:
2 boxes of betty crocker butter yellow cake mix
2 sticks of butter

5 eggs

2&1/2 cup water

1/2 tsp vanilla

Directions:

sift the cake mix and put it in a bowl.

in a separate bowl, cream butter until super fluffy
add one egg at a time
add vanilla
add water
add sifted cake mix
beat for 2-3 min until well blended and creamy

line cupcake pans and bake for 12 minutes or until cake tester comes out clean

Enjoy!