changed a little, if I slow down it is very slow and if I increase is too fast

Oh, c'mon. A tiny bit left to do so you could master a waving animation.

Had thought the same thing, but I will only be able to edit later because I'm out of time. Thanks for the tips 

Yes, definitely. Maybe add some pause after lowering?

I think now is better

Well, I think rising is still a bit slow. It is ok, but faster might be better.
And please, do the lowering. It looks very rough when suddenly arm goes down in 1 frame.
 

I thought at the beginning and end of the animation it very slow, so I did a balance not so fast and not so slow

Rising was better when it was fast, imho.
And what about lowering?
You can do it really lazy and just reverse rising.

think that's better, increased the time raising his arm and waving

Better. Maybe add a lowering movement?

Ready! increased the speed

I was scared to be very fast and stay kind of desententido work, the next time already know how to do

This animation is sloooooooooooooooooooooooooooooooooow.
Don't get it wrong, big amount of frames is good thing, but not for such a little movement.