Next, cut out 8-10, 4.5 inch sqaures. Take two squares, right sides together (if there is a right/wrong side on your fleece), and sew them together. Cut them across diaganolly and then flip right side out to create your triangle "spike". Do this until you have 4-5 spikes.
(I know, not a great picture - but she REALLY didn't want to get off her Pillow Pet!)