So I wanted to show the full-sized version of the page, because of how much detail I put in, but it's because I put so much detail in I need to highlight the flaws:
See how her bow handle has a shadow? That's an error. Similarly, the bow handle is opaque when it should be partially transparent.
This is a bit of a nitpick, but the shadow has a white outline, thanks to wrong order of operations (I transformed THEN filled, where I should've filled THEN transformed).
I have a similar misapplication in the handling of the sketch layer, too. Plus, this is detail-work, but basically: this is one of the only images I anticipate ever drawing of a hand so close...and I didn't include fingernails.
And while not an error per se, there's a difference in the bow between this page and the cover page. Speaking of the bow, as a probable (but not necessarily) error, the arrow appears to pass right through bow handle.
Otherwise, love everything there.