I really love the way you've taken this, and well done for finishing! I think the water around her weapon could be just a little bit murky, or even have some effects as though it is actually splashing through the water as it doesn't blend in well with it. Is the handle meant to be bent like that? if it's related to the perspective (fisheye) then the rest of the images needs to be distorted to the similar amount around the edges - the water surface would need to come up rounder, her face and hair wrapping around the sphere of the perspective - the dragon would be mega distorted too as it's right at the edge. If this isn't the case then I'd just straighten that spear handle a bit, the rings where the head connects to the handle also don't match the perspective