Hi Julien. You could try moving the ball back in your stance slightly and really feel like you are hitting down on it. Also maybe make sure your hands are set ahead of the ball at address and feel like they return to that position at impact. A good drill is to set all your weight on your front side with your hands well ahead of the ball. Hit a few balls on the range in this position to really get the sensation a proper impact position which will help you compress the ball. This helps me when I am struggling with irons. Also having a PGA pro give you a quick lesson could fix it right away.

good luck and keep us posted

Brian

Without seeing any video or evidence the best thing I can recommend is repetitions. Work on making the contact with the ground, even if it's more at first and work your way backwards. Possibly find a very thin board or plexiglass (something that will not damage your club) and work on your stroke from there. 

Keep the knees slightly bent and let her go!

Hi Julien,

If you are missing the ground in your practice swing, there is a good chance that you are standing up, out of your posture. Looking at a long/low iron with such little loft can make someone want to try and lift the ball off the ground. This can lead to bad movements in the golf swing.

Look up drills that will help keep your head still until impact. Also make sure you have your hands slightly in front of the ball at impact or else you will probably hit it fat.

The other possibility is that you just aren't releasing the club. I see this when someone who was in little league tries to "crush it". There was a time where the internet was abuzz with talks about lag and holding the L-shape angle as long as possible. If you hold it too long, you effectively shorten the distance from your swing axis to the club head, which means you would miss the ground.

If this is the case, try swinging your long iron more like a flop shop, with loose wrists to allow the club to release properly.

Hope this helps.

make sure you are taking a complete back swing , back to target ,take your time making backswing to give all your body parts a chance to catch up , then swing back easy don't forget to keep right elbow tucked in on way down

I would take lessons from a professional. Quickest way to get where you want to be, from my own experience

You are not making a real shoulder turn.. Rotate around your spine.

oh, and go see your PGA pro.

What helped me was I leaned the shaft forward an inch or two but not too much. Also stay down on the ball. At impact I used to jump up at impact but now I just stay down through the ball.

What always worked for me was really trying to hit the ground. On the range put all over focus on hitting the ground. Do this without a ball and when you feel comfortable, put a ball and try to hit it and catch some turf. 

I know this sounds stupid but it works for me so just give it a try