1.)You have made good improvments with your air pressure.
2.)Better at making sharper notes.
3.)Better at not grunting into the notes as much as year ago.
The "need to work on":
1.)Work on getting the types of calls put together. Hail, greeting, comeback, feed and lonesome hen.
What I mean by that is you need to taper down the quacks gently and not so fast from loud and long to the last note that is shorter and softer.
2.) Sounds like the call you are using is not tuned to your air pressure and calling style. Sounds a little to high.
3.) work on your feed chuckle so that you can do a softer single note chuckle.
overall you have improved lots from a year ago. Try different calls to see what fits your calling style and listen to some of the files posted on here and learn as much as you can. Practice, Practice. You will keep improving. Good luck and maybe you will get some more good advice from others on here.
Born and raised in Arkansas flooded timber!