oh what a good choice to practice, If you don't mind i'd like to add my two cents. The beak is not long enough, it should be almost as long as the neck it looks like it's going out far enough but it's not going far enough into Daffy's head. The feet also need to be bigger, his left foot need's to be "meatier." The fingers are pretty good, but like the foot needs to be a little fatter. His back is too long, and his hat is too short. i'd also work a little more on the eyes. The drawing itself is very good and you're obviously thinking about form, just work on proportion a bit more and you'll get it. Good job and keep on keeping on!