I'd say this is ok start, looks you understand lightning fair. Couple odd points on this coloring like the skirt and upper wrist guard collars.(should be more radical method or approach) You're starting to use more of a blend array of colors which is good.

I'm just going to suggest some methods to enhance your coloring.. maybe help push you to forward.

Hmm, let's see it looks like your pasting down a solid flat and spraying over it to give the body/clothes some 3D. I'm going to suggest you try doing a bit of cell shade maybe. In this you generally place down a solid base (flats) lay down other coats and cut them in some artistic way. Now in that you can go many ways.. If you can do that then you can go back to blending then use those artistic cells and create a more clean better anime coloring. Now you'll have to really think how you want to lay the layers you don't want to paste them symmetrically from another on legs etc. I see you have a generally concept of that already, you just got to dig deeper.

Basically I'm going to suggest you look at considerably "fair good/master colorist" and try to mimic some of his/her approach. Once you absorb some of that you should be able to take your own method of style.

When you get to a decent clean cut cell-shade you can take those boundaries blend them in a certain array you'll get what I think your looking to go. Not that there is anything wrong with what your doing atm, it's just how much time you want to put into coloring.

Now to practice coloring, I think it would help you advance if you tried to do some nice fine lineart as you progress. Generally the better the lineart more style/skill you can show in your coloring. Using a lineart with errors usually leads you to having a discomfort with what you done or some funky odd area. I'm just saying I found it quicker to learn that way.

I'm not going to make this a giant post.. I'm not going to force you into any real direction. But, it just looks like your trying just your moving at a slow rate.

Maybe the best way to help you take a big leap is to take a good colored picture "real high quality" erase a part and try to recreate that maybe just a arm/leg etc. Just to learn some blending (don't use the smudge or eyewizard)