Nice work
Well, this is certainly a piece that could class as a World of Warcraft fan art submission - have you considered sending it in to them so that you can get published there?
I think that your issue with the right hand isn't something to worry about, as it wasn't noticeable, until I read your notes on it all. The detail is good - sparse where it is not needed and not overkill where it comes into play. Lots of high fantasy elves tend to have leaf motifs crawling across their armour and shields. Perhaps this could have been picked out on the armour, to give a nice additional look. I would have worked with making the background look a bit more detailed, giving more shades of green and a more dark, mysterious tone to the piece.
I also think that she's wearing a little too little in key places - If she puts down her quiver, there is more than just a hint of nipple on show. Even in a comical sense, the costume would need to be practical overall. Perhaps a crop top style for the top and then the strap for the quiver between the comically oversized breasts, as this will then accentuate that look as well.
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