You're an animating machine, I'll give you that.
1 and 3 look like hes stroking something.
Make the sword thinner, like you had in the standing animation. Hes carrying a huge banana that doesn't fit the style.
The hand should move the sword, the sword should not move the hand. If you are ready to strike with a sword you want to keep that sword steady and in your control. The seesaw motion of the blade gives the impression hes handling it carelessly.
The blade should be up. You have the blade down. Take a look at some pics / videos of katanas and how they are worn. They always have the blade facing up.
Keep up the good work.