Lemon glazed cake

It's  my cousin. Charlotte favorite lemon  cake that iam sharing today : So Happy Birthday Charlotte! 

• 1 box lemon cake mix without pudding in the mix
• 4 eggs
• 1 small box instant lemon pudding
• 3/4 cup vegetable oil
• 3/4 cup water
• Glaze:
• 2 cups powdered sugar
• 1/3 cup lemon juice, you can also use orange juice or lime juice.
• 2 T. vegetable oil
• 1/2 tsp. lemon extract (optional)
• 1/2 tsp. butter flavoring (optional)

1. Combine the cake mix, oil, eggs, pudding mix, and water.
2. Pour the batter into a sprayed 9″ x 13″ pan.
3. Bake for about 25 minutes in a 350-degree oven.
4. While cake bakes, mix the glaze ingredients.
5. To test if the cake is done, a cake tester or toothpick should come out clean, the top should spring back when touched lightly, and the cake should pull back slightly from the edges of the pan. Do not underbake.
6. While the cake is still hot, use a fork to poke holes all over the cake.
7. Pour the glaze on the hot cake. Use a rubber spatula to coax the icing into holes.