For a first animation this is ok. Should of put it and left on deviantART. If you own an account on there.

It wasn't bad, but it wasnt good. Its justa guy moving his arm. Keep at it and one day you'll be good. Also, his arm gets bigger and smaller when its moving.

It's a test, however it's pretty good for your first attempt. I like how instead of tweening it (which imo tweening looks worse SOMETIMES) you drew each individual frame for the hand. The hand changes shape a little throughout, and doesn't seem like a regular, more natural movement.