I’m sure many of you are welcoming Fall with a new hair color and cut. I’m still not done experimenting with new hues this season, so I thought it would be great to post how to get your perfect shag with tips that celebrity hairstylist shared with Glamour magazine in July 2009: Start with the right cut. This remix (as Taraji P. Henson models here) of the classic bob is all about layers. Ask for longer ones on the sides and angled fringe. “Asymmetrical bangs add sex appeal,” says stylist Dante Blandshaw, who gave Taraji P. Henson her shag. Piece out. Rub smoothing cream between palms and then onto damp hair, starting at…