Hi, welcome to the forums!
I personally feel this area is a bit problematic
as there is a strong tangent between the tip of the arrow and the edge of her arm. Also it kind of looks like he's shooting into her armpit, which of course would be sorted out with shading, but it's better when things flow clearly from the start.
Another thing, this is the way my eyes were lead.
You use strong lines in your composition (which is great) but they should be used to direct the attention throughout the piece and towards you main element on the top. Right now they are leading away from the canvas, and separating the top half from the bottom half.
But I have to say, what a piece! I do hope you will work on it some more. The characters look great and the symmetrical composition on the two characters on the top is really selling the whole deal. Nice work!