hi
i would go along with what Lowpost said. i don't try and hit down on thew ball as it will happen by its self you will come into the ball steeper with the shorter irons and i like to think of a point a few inches in front of the ball as my target and swing to it and let the ball just get in the way. i find i hit the ball a lot cleaner that way.
try what lowpost said and put a tee or a coin about 2 to 3 inches ahead of the ball and line you with the ball bit swing to hit the tee or coin. it helps you move your weight to the left and keeps the club head speed up.
also try and swing a little slower and think more on making clean contact. when you start hitting cleaner then speed up a little but work on cleaner contact first, as you hit longer with a good sweet spot hit swinging slower than swinger faster and hitting of the sweet spot.
cheers
bill

__________________
ping zing2 metal driver
ping zing2 metal 3 wood
ping eye2 1 iron
ping zing2 3/9 irons
ping ist 47% wedge
ping zing2 52% s/wedge
ping mb 56% wedge
ping c10 G2I broom handled putter
top flight "T" golf balls