Blueberry muffins

Today i'm in the mood to bake blueberry muffins! i spend 1hr to make 18 of them. Practice really makes perfect.. though its not perfect yet.

My guniea pigs' verdict:
1) it looks pretty BUT
2) where's the blueberry taste? (hmm.. must i add artifical flavours) and
3) can be a little sweeter

Ingredients:
2 1/2 cups of flour (all purpose flour)
3/4 cup castor sugar
2 tsp baking powder
1/4 tsp baking soda
1 large egg (2 small eggs)
3/4 cup milk
1 tsp vanilla extract
1/2 cup unsalted butter (I used margine)
Zest of 1 Lemon
1 cup of fresh berries

Method:
1) Preheat Oven to 180 degrees
2) Whisk milk, eggs and vanllia extract
3) Sift flour, baking powder and soda
4) Blend the butter with flour mixture
5) Gently fold in the berriers to (3) (if not, you will break them)
6) Add (2) to (5) and mix (but do not fold too much)
7) Spoon the mixture to buttered cups and bake them for 20-25mins in the oven.