Wow, This doesnt even look like pixel art... wonderful~

This is a real good skill if you want art-like sprites in your game. Good job

Holy smoke! ;) Beautiful as usual. She's got lovely Spiderman eyes!

Too much dithering...

Nice, creative within the pumpkin theme, I like it! I love the colors and the thick outlines. Here are a few suggestions:
You seem to have some inconsistencies in your lighting. Her thighs especially seem to be lit from different directions. Also, you've dithered the skin in some places but not others. I'd pick one and stick to it. Lastly, a matter of pure opinion, I'd add a bit of curve to her back (curve the other way). Here's a quick edit to show what I mean. Just my opinion, tho! Again, nice. I love the smoke/flames, it's very artistic.