ok, make really small movements in the frames! thats how you make it slower and smooth,
that animation was choppy, and im guessing the GIF stuffed some of the colours .
and yeah, just read tutorials, or go to www.Darkdemon.com and look at the .pivs people have, and on www.droidz.org study their .pivs, everyone (most people) do that.
I thought the begining was good,
but then the jumps looked choppy, and a didn't look real,
and near the end it was stiff...
just yeah do what the others said, and practice, and master the basics...