Hello Pixel Joint Community!

I haven´t posted here in a while, but after diving some months into only programming I am now back at pushing pixels!

I was doing some tutorials and a friend liked my pieces and so he asked me to draw him a character. He taught me a lot about programming so this is the least I could do.
Here is my Character sheet so far, and the animations for a walk to the right and to the left. I am quite satisfied with the walk right animation, but somehow the walk left animation looks very off. Do you have any idea why that is? I mirrored the right walking animation and cleaned up the hair because we cant see all of it from the left. But the body somehow looks not balanced.

Another thing im struggling with are the front and back poses. Right now the face is too wide in my opinion, but when I make it smaller the eyes have not enough space to seperate. I also have no idea how to make the arms and legs not look so stiff. Some input or examples would really help me there!

Here is the sprite-sheet and the 2 gifs: