For a keyboard not too bad. But just looking at the drifting itself, amateurish at best. And this judgement doesn't even include that you used the RB4, which is by far the easiest car to drift, and I'm not sure if the drifting community actually recognizes 4WD sliding as drifting at all.
Really bad, i'm afraid - the k/b makes it even worse, at least use the mouse ffs. Your not drifting, your just using the brakes to get it sideways, flooring the throttle and it slides for a bit before the 4wd pulls it back round.