No need to start over, but there are always a few things to improve.

Im not so expirianced with walking animation, so il leave that to some ells, for me, it looks fine as it is animation wise (exept one part of it, as il mention later).

As you said yourself, the character is a tad plain. But with a few easy fixes that can be changed easely. Your clothing design is very simpel right now, there can always be smal things that you can add in, forexampel something special this character caries, exampels: a special hat/headgear, and eyepatch, glasses/gogels, a backback/bag, a sword or other weapon, a ribon, a cape, armor parts (like sholderpads, armguards, legguards), A mask, a bigger belt, a scarf and so on. They are many many smal extra things that you add without changing the basic clothing to much that will instantly make her more distinct.

Another big change that I really think you should do is the coloring. It right now does not add anything to the characters image (exept making it very plain). I would say that you make the colors alot stronger and vibrant, they feel way to dilute now, Like the pants and the hair. With alot darker hair and red pants will create a stronger contrast to bringout stronger characteristics with her, just experement a bit.

I love bouncy breasts! I addmit that its my great weakness! But with your character I am unafected... It really does not workout. You been trying to hard to make it noticeble I would say that makes it look extremly wierd and very unnatural instead. Do remake them, as it feels like they are standing out way to much, jumping as they are made out of jelly, but at the same time are rock hard! as they never change shape.
If you still want them bouncy, then pleace try and make it more subtle and pay more attention to shape and gravity.

so in short:
1.Add/change something that makes her more distinct.
2. Add stronger contrasts to colors.
3.fix the bouncy breasts.

Cheers.

other than the hair being cut off.....there is the fact that your arm action from the the first seen arm( I mean her right arm) is wring as it seems that some how, that hand comes back behind the arm its self, giving the impression that the elbow needs to go up to do this action.

edit: uh it the fact that there's to much of a gap in between two of those frames.(I'm not good at explaining, so please have a look at that hand and why it should stay facing the floor with such a low arm action.)

Hair seems cut off right at the top as it is flat.

And you got it right there. :P

The colors in the edeit looks alot better, thats the kind of red I was hoping for :D I also kind of guesst otherwise that you could not make more changes then that.

It feels like you really dont know what kind of person your character is, without knowing this, it gets very hard makingsomeone with more "character". Find out who she is, what she has done, what have happend, then you can start creating someone that becoes alot more interesting.

Other ideas how you can improve her otherwise:
The face would be one of the best ways to do it, right now hes got a very plain "generic anime face" look. bigeyes, smal nose round face, thats it... Try experiment alot more with the details on her facel, like the eyes, add a mouth, nose and so on, even the face shape itself. Then deside what kind of person she is with some traits: shy, strong, weak, angry, happy, determend, sad, or any other feeling that can be seen with body language. Then Translate these into her face features. You can then do the same to the hole body, as a afraid/weak person will run in a diferent way from someones whos determined/strong would.

For the breasts coment, its just what I think after all :) It might not be as bad as i made it up to be, but I still think you need to give it a second look. And by saying "like a father hearing from some kid that his daughter's..." Just really tells me that you are way too close to your subject matter to be able to more clearly se the flaws youself. Take a step back, look at it as if it was not your pixelpiece, and then try again.

cheers

Question:

This animation, and all of those I have made for this character, have the front foot two pixels below from the back one. Once I place this girl in my scrolling world, I thought I could get some sense of perspective with this, but I'm not so sure if this effect can be achieved on 2D tiled worlds. Of course, this greatly depends on how I make the world tiles.

What do you think about this? any tips for making the world tiles for this perspective? or should I put both feet back to the same line so I can make my 2D world without any problems...

Yuji