Mix up, but not overmix, sugary egg plus wheat batter with baking powder and desired flavors, plus add-ins, bake at temperature 1/8 - 1/4 lower than pizza baking temp until toothpick comes out clear after to stick it in. Cool it and top with toppings you want. Bake several layers separately if cake has creamy layers. Did I get it right?
Have you ever come to the conclusion that literally everything humans manually do is easy af, you just need to understand the fundamentals as well as practice the thing, because otherwise humans wouldnt be doing all those things?