Adam, the first I noticed is that your bowling arm comes from 'behind' your head, did you bowl slightly wrong footed when you were younger? (Don't take this the wrong way!). You need some work with your front arm though, it seems to have a tendency to release to soon rather than be part of you action thus affecting your accuracy.
Bowling from 'behind' your head is all good though, in my experience such bowlers tend to have more accurate leg breaks but the downside is that it tends to kill off your variation options (other than a Mushie style googly).
Bowling from 'behind' your head is all good though, in my experience such bowlers tend to have more accurate leg breaks but the downside is that it tends to kill off your variation options (other than a Mushie style googly).