What's with all the sadness? The topic symbol, 'unimportant', 'doubt it'.
<3 <3 <3 <3
Here, internet hearts for you, this is great!
I adore the character design, the gameboyish colours + red and the description of her : D.
From what I see here, you're clearly pixel artist material!
Going after the pallette and style you chose, I'd say you pretty much nailed it, there's not much more to do with this piece except for adding more colours or doing things that would change the piece.
For nitpicks though:
Personal preference of mine: I'd make the outline of her chin into one single connected line that's one single color O:
Her hands are a bit harder to read than the rest of her.
If you'd like to work around this piece some more, I'd love to see a background of the bakery where she works! That, or some animation of eating cake (:
Please do post more! And do not doubt your dream and your ability to become a pixel artist working pro! A pixel artist in general, you are already!