I like the piece, good job.
My crits are in line with earlier comments about the ewbow of the girl up top, actually it’s not her elbow but her forearm that’s causing the problem. On a man that forearm wouldn’t look so out of place but on her it’s not correct. You should reduce the width of it.
Another place that could be improved are Odin’s shoulders. Partly because the woman in the foreground is obstructing the view you’re getting away with it but for a guy holding a massive blade like that and given the size of his hand the shoulders are nearly invisible and sloping way down.
I’m asuming those wing-type things around Odin are part of the throne… If not then the perspective doesn’t work out right.
Anyways, I hope this helps out. You’re definitely gettign the hang of painting in Photoshop. I don’t think I can do it as well as you.