When it comes to baking, you need to follow the mantra mentioned below-
Baking a cake is nothing to fear of. Do not be over careful or overzealous. As long as you do exactly as the recipe states, it will turn out JUST fine. And even if it doesn't, the best part about baking is that it makes you think later of what you might have done wrong. And the more you give it a thought the more you want to try your hand at baking different things, thus increasing your expertise.
So all in all, enjoy the process without worrying about the end result and it should and would turn out as it is supposed to be!