Solomons Knot Shrug post, the shrug I made from the pattern on page two of the linked post above didn't end up fitting quite right around the arms so I tried it again and it ended up fitting much better. :) Below I explained what I did for the second shrug.
*Also to note: for this shrug I used two strands held together of Vanna's Glamour Yarn in Topaz with an I hook.
1. Crochet a rectangle of Solomons Knot crochet the width of your shoulders (measuring behind your neck all the way to the end of each shoulder) and the height of the distance around your arm plus a little wiggle room. The basics of the Solomons knot can be found here.