See http://www.jpfun.com/patterns/free/angels/f104006_littlebobblesangel.shtml for pattern.
I used a 1/2 7.5MM silver colored crochet hook and Patons Grace 100% mercerized cotton light "3" weight. So my angel is about 5-6 inches tall. Can get 2 angels out of each 50 g/ 1.75 oz ball.