It's coming along nicely! Really the only things that still look like they need tweaking/replacing is her boots and her skirt (the ones you have don't look bad, they're just not the same colour as the reference pic).
I did a little search to see if I could find any boots that might be closer. I came up with:
Magical Mender
Virtuous Jabberwock Bride
Magic Royaux
None of them are perfect, but I think they're closer in colour and style than what you have currently.
Here are some potential options I was able to find in the way of orange skirts:
Orange Serafuku Skirt
Pumpkin Orange Shredded Skirt
Moira's Lively Rebellion
Oange Pop
Skelekitty Stroll
Candy Corn Steet Style Cupcake
Honey Rose Revolution
Ditzy Dragon Slayer
Decayed Candy For You
Butler Maid For Treats
All Frighteningly Negative
Needless to say, I had more luck with my skirt search than I did with my boot search.
lol And just so you know, most of those skirt items have recolours, so if you like the style of something but the colour isn't quite right, just do a search for the item and you should bring up any other colour options that exists for it.
I also feel like her top isn't quite right, at least in terms of being faithful to the reference image, but it also looks like that orange top is attached to her arms, so I don't know how you feel about messing with it.
Lastly,
Rose Commander (or recolour) and
Pick Your Nose each have a cute, small, anime-style nose that I think would really complete her face nicely. Avi faces just look sort of odd and empty to me when they lack noses. You might also check out
Sweet Talker for a more dynamic mouth.