Re: relaxing during technique - how?
I think that i agree with all of the above advice and i could throw even more of them, but the point is that there are also other factors.
For example: how long have you been studying Aikido? How old are you? Are you overweight, or a smoker? What do you eat and how is it cooked?
Problems in technique can sometimes have the roots in technical mistakes and sometimes be the result of other wrong aspects of life. Most often is a combination of both.
Aikido is an all round way of life, so one has to keep that in mind.A lot of factors can affect your technique and also you need to have patience in order to take the time to progress.
So the right choices combined with lots of practicing hours and all that in a consistent long timeline can get you some results...