Drawing a four pointed star

Now this is an easy design. It's really just a Latin Cross with a slight twist. If you don't want to draw a cross first, you can use a grid just as easily:

An example of making a star using a grid

Handling this design without a grid is pretty easy anyway:
Lightly draw a Latin Cross.
Connect the middle of the arms to the inner corners of the cross. That was all there is to this design!