New Punching Bag

I just picked up my first punching bag. It is a heavy weight, free-standing bag, about five feet tall. I need practice directing more force (more of my weight) at a target. It's difficult to do this just flailing in the air because it's very easy to hyper-extend and strain muscles (which I have lots of experience with). Now I have something with which I can feel the weight of my strike.

I'll be testing for my next belt soon, I think. Hopefully, this will allow me to approve sustantially.