Here is my own take on the Spanish-hijab (aka tie-hijab with no neck coverage) style.
The steps are basically as follows.
1. Place an oblong shayla scarf basically centered on your head.
2. Tie at the back in a single knot.
3. Take one of the sides and cross it back over your head.
4. Tie that end to the other longer one that is at your opposite shoulder.
For this style it is all tied and not pinned anywhere. I wore it downtown for a couple hours and it did get loose after awhile so I had to untie the second knot and tighten the first. You could probably avoid that by using a pin to secure the first knot.