If you want to just do a 6 pointed star, the way to go about it is by using 60 degree diamonds and triangles for the setting. Most quilting rulers (the clear ones) have a 60 degree angle line on them, or you can even use a drafting 30-60-90 triangle.
Okay I tried to explain this with words alone, but I am way
too visually oriented. So I drew a diagram
. Also included a pic of a block from a quilt I just finished.
Here it is:
You can make templates of the diamonds and the triangles if you like, but this is the way I did it:
First cut your fabrics into strips (I cut mine 3"wide by width of fabric I believe). Then using the 60 degree line, make cuts every three inches (or the same measurement as the strip) along the fabric. you will have diamond shaped pieces. For the background cut those in half and you will have smaller triangles.
You need 6 diamonds and 12 triangles for a block.
To make a unit, sew two triangles to the diamond, one on either side (see pic). Then make two halves by sewing three units together (again see pic). Finally sew the two halves together, and you have a complete block.
ETA: I totally forgot this, but when I constructed my quilt, I did not finish each block individually. I left them as half blocks and then sewed these together in rows.The rows were then sewn together, completeing the blocks. of course I have to do another picture to clarify (I don't draw well with a mouse
I do hope that was not hopelessly confusing. It really is quite easy once you get used to the 60 degree angles.