Follow the recipe the first and second time (personal experience), and then wing it or try something new. Like with box brownies, the difference between cake brownies and fudge brownies is the number of eggs. And extra flour in a chocolate chip cookie recipe makes the cookies more, I don't know, full, domed, a little more fluffy.
see this is the smart way to go about things
if u dont follow it the forst time and mess up u might not try again (speaking from my own experience)
The only thing I've found I can't make thus far is creme caramel. Yes, it literally flopped. Guess one has to have a knack for making stuff like that.