I'm trying to make my serve more consistent and be able to spin it in. One of the problems I have is with a consistent toss. I have heard that one of the things for a consistent toss is to make sure that your tossing arm is straight and not bent any time during the toss, is that correct? Also, I read items where they specify things like toss it behind you or to the right, etc. But is that tossing it behind me relative to me or the baseline? Cause I usually stand at a slight angle towards the baseline.