yes, al's pic is much better.
i might also separate the feet about hip distance apart (it's not wide, it's actually just the distance of your two fists together!), and use some bent knees, and go easy on the shoulders. just focus on the back being flat by rotating the hips so that the tailbone is moving toward the ceiling (as much as humanly possible). that's more of a "feeling" description than anatomical one, btw.