The key to revealing abs is a lowe body fat %. No matter how much and smart you train yur abs, if you have a layer of fat covering them, you will never see as much definition as you want.
So fat burning cardio is a cornerstone of any endeavour to gain ab definition.
Also, you mentioned somethhing about the shape of you abs. many people say that whether you can or cannot have a 6 pack is genetic. This is slightly misleading. ANYBODY can have ab definition
. If, for example, you have a low bf % and have strong ab muscles, you will see abs. That
part has nothing to do with genetics. However, the shape
of your ab muscles - like whether or not they are perfectly symetrical - is, unfortunately, genetic. But either way, ab definition - symetrical or not - looks awesome!!!
make sure you are doing cardio correctly. Otherwise, you might be burning lean muscle instead of fat.
P.S. I really CAN
spell. I just suck at typing and tend to type fast with lots of typos!!!!