On a whim I made a cake for the first time ever, in this case a Duncan Hines Triple Chocolate cake.

Process was pretty straightforward. I used an electric mixer to mix the batter powder, eggs, oil and water. Used store-brand corn oil. Baked it in 2 9-inch pans for 30 mins.

The results were okay - tastes pretty good. However the basic texture isn't like a store-bought cake. By that I mean it's kind of dense, chewy compared to a store-bought which I would describe as typically being more light, fluffy.

Is there a way to make it more like store-bought?

Thanks.