C21: Sounds like you do have the right forward angle of tilt. And if you use chalk or impact tape or grass smudges to read impact on the center (or a bit closer to the heel, actually) of your clubhead, you are rightly measured. If you DO hit toward the TOE, stand 1/2" closer, or whatever it takes, but don't change your chest angle.
There are basicallly TWO issues of measurement and one of chest angle that apply to all and that can become issues if they are not understood. 1) The left shoulder DOES move CONSIDERABLY to a different place than where it was at setup. So that has to be allowed for: it is less problematic with irons than woods, but in either case, it is an issue. Look at your clubs: are all or most of the impact marks on the toe? If so, STAND WITH FEET CLOSER to the ball.
2) The momentum of the clubhead during release is so great (100 pounds maybe) that it "stretches" your left armclub: it pulls the shoulder blade forward towards the club, it straightens the left elbow more, and it unc0cks the clubshaft relative to the left arm. So the armclub GETS LONGER? Not allowing for THIS is a common problem of chunking approach shots with less than full swings; it is because we "soften" our arms for the touch shot we wish to pull off, but it "gets longer" as above during the swing. In the process the sole of the club has to go SOMEwhere, and it will either move down and create a fat shot, or move further from your toes, making a heeled or shanked shot, or both.
3) The angle of the chest is a factor in that for steep swings with short clubs your arms hang straight down by gravity, so the ball is close to your feet. FOr longer clubs, esp. the driver, the length of the club doesn't permit that. So for THAT you won't get away with reaching out with your ARMS off your chest, but only by raising your CHEST to allow for the longer club.
Looking down the line, a good swing with a PW or a driver will always have the same angle between the spine and the left arm during the release. THAT angle is key, and it speaks to the connection of the left tricep (and the right one) to the chest: a forward swing uses chest to pull or push the arms downplane. They don't pull or push independently, disconnected. So the chest not only PROVIDES SUPPORT under the triceps, it must be CONNECTED TO THEM to apply its force to the arms.
Make sense?