First of all I'd like to say I really like it stylistically. The colours and brush strokes grab my attention, and the body proportions are close enough that the thin neck and long arms feel like a choice rather than a mistake.
What I'd critique is the heavy focus of light around the character's midsection. Although that's the exit through the trees I assume behind her, the heavy contrast between her dark dress and the bright light draws my eyes away from her face, which is much more interesting to look at than the chest.