1. A picture is fine. A written description is still appreciated though. So you can do a picture, and just do a small written description. That's fine. The written description doesn't have to be as detailed with the picture there.

2. As it stands now his spells are way too powerful. Especially his Water/Calmness and Ice. Those are pretty dang powerful, though I realize that he won't be using it much due to his hotheadedness. Still they are pretty powerful. His Wind/Anger is pretty powerful too. A good way of toning them down is to set limits for each individual power so he won't use them every time he gets a chance to, and will only save them for when he really needs to. Like having him be KO'd after summoning a (small) tidal wave or tornado. I'm not asking you to remove them. It's just that each one is powerful enough (aside from Water/Sad) to overpower most of his opponents no matter which mood he is in.

3. Then you could list that as a weakness. He is prone to fumbling because of his hotheadedness. That kind of clashes with him being a very good swordsman, though. "Being able to get hit" isn't really a weakness simply because he can overpower his enemies before they can do so. Another weakness is that his magic drains him and if he's forced to use it, he cannot fight. (turning most of them into last resorts is a good way of limiting them)

4. I suppose you could expand on it as you RP with him. But all I know about his personality is that he's hot headed. He's easily angered right? (which would make access to his powerful angry-wind all the more easier. All the more reason to tone it down. The powers I mean.) And he's foul mouthed? How often does he curse? That's part of his personality too.

5. x3 History is okay now.

I understand he's a 1/4 god, but he's still too powerful for now. Later you can unlock more of his abilities/power. He is plenty powerful without most of those abilities. I mean, he's still a great swordsman right?