text: That shouldn't have any effect on your ability to develop a six-pack.  In fact, everyone's hips are slightly crooked, our bodies are not perfectly symmetrical.  What can affect your ability to develop a six-pack is your genetics.  Some people have a genetic disposition to a layer of fat on their lower abdomen, but with diligent training and more importantly, the proper training, this is likely something you can achieve.  I doubt that your six-pack would be even noticeably crooked.