I let out a long slow breath of air, usually point my head down a bit and give a couple kicks to get me started so the first breath I take doesn't pull me up. Though I start more head down, as soon as I'm around 5 feet, I flatten out into the skydiver position and gradually add air to my BC as I descend until I'm hovering 3-6' off the bottom. If I have issues to work out, I get to the hovering position and then let out a little air so I can gently kneel on the bottom.
Oh, except this last weekend where I did a recovery dive sans power-inflator, which I'd disconnected because it stuck on the previous attempt. That time I had no trouble getting down (deliberately overweighted), but didn't get a good chance to fill on the way down, thus smacked into the bottom with a pretty good deal of force (on sand).
What's weird is I remember struggling to get down with 26 lbs. Now, I dive with 16 and don't have trouble descending (that's with a PST tank though).