I got into the habit of studying sprite animation from some older games. There's just some simply amazing animation in Capcom's Street Fighter's Third Strike. I highly reccomend visting sites like http://www.newwavemugen.com/~zweifuss/, saving these buggers and going through them frame by frame. You'll see some amazing poses. I did, or half did really, a few sheets based on what I was seeing. I'm so glad that traditional hand-drawn 2d sprite based fighting games aren't going anywhere with games like BlazBlue and King of Fighters XII taking it HD.