Played the game for one day and thought immediately how I would like to have a custom character. Well, you can't change the names of your characters, but you can replace the textures, and so I found some sprites from the doujin game "Battle Moon Wars" and used them. Credit goes to Dazz at the Spriter's Resource, and Nightmare at spritedatabase.net for the sprites.
There are currently three characters:
Saber (Marie, Ice Age)
Archer (Richard, Ice Age)
Rin Tohsaka (Samantha, Industrial Revolution)
Some screenshots:Standing and portraitStorm Dash/runningJumping
Rin: (NOTE: Rin's sprites from BMW do not have any walking animations, so she'll float. It's weird, but I can't do anything about it! Sorry!)TO INSTALL
Download - http://dl.dropbox.com/u/4132178/BMW%20texture%20pack.rar
Place in steamapps\common\a valley without wind\RuntimeData\Texture Packs
Let me know if there's anything I can improve!
EDIT: Here's a template for making/spacing the walking animations that I made quickly.