not bad for an unrust, here’s a few tips:
– when using smears, try not to use full blur too much, as the two ways of showing movement can conflict and make the smear look like an object
– try to move the arm as the other one is spinning, or slow it to a stop rather than make it full-stop in the middle of movement
– have the hand move with the other arm a bit more to better explain how he’s grabbing it, dislodging it, and spinning it