How NOT to do it.
Shot with my mobile phone camera, this is taken straight out the glass door of my shop. WTF people? Seriously. It's all vertical parking there, NOT diagonal. However, in your rush to get your Christmas list checked off, feel free to park willy-nilly any damn way you please.
Those moving blobs around you are people living their own lives, NOT obstacles on your own private race course.
Just another friendly holiday tip from your friendly, neighbourhood phoenix.