It's my policy. At the beginning, I stressed that this would be a relatively slow-paced RP. Furthermore, people are going to school, or have work, as am I. I understand this, and that stays with the ideals of the RP. You have to understand that the pace of the RP depends on the GM. Every pace is different. Some have 10 posts a day along. Others, like mine, have around 2-5 a week on average, and I have no problem with that.
I'm sorry, dude. I can't go back on it now. I had other people apply before when there was no room and I also had to decline them. If I were to accept you now, what would that make me look like to the others? I'll let you know once there is room once more in the RP. I do frequent kicks of people out of the RP if they don't reply for two weeks.
Okay, after you're done, I'll read it over to see if it's could possibly be accepted. I'm not the GM or anything (even though I was offered to be, but I said no), I still have been around for awhile. xD
Like Supervegeta said, blood bending is connected to Water bending (Katara can use blood bending due to blood having water inside) and sand bending is connected to Earth bending due to it being eroded earth. Same as how metal bending is connected to Earth bending due to it being refined earth (although, if your character is a metal bending, then Toph wouldn't be the first metal bender). xD
Supervegeta did talk about it on the RP, though, if you've seen it.