Cake mix

I made some cake mix for Anand so he can bake his own cakes while he's by himself. I just mixed 4.5 cups of flour, 31/8 cups of sugar, 2 tbsp baking powder. To bake his cake all he needs to do is: cream half a cup of shortening, 1 egg, 1 cup of the mixture, add flavoring agents, some milk for the right consistency, bake in a 4 inch pan for 15 minutes at about 350 degrees.