Some positives to take a closer look at:
- decent footwork between the shots - allows me to prepare early
- early shoulder turn and racket preparation - I won't feel rushed responding to fast shots
- lifting the racquet head while waiting for the forward swing - dropping it before the forward swing gives me nice racquet head acceleration
- point of contact in front of the body - that's where I get my maximum power thanks to full extension, and good control since arm and wrist are straight behind the ball
- full follow through - I don't waste the energy I generated
- my other hand stays back - increases stability (for one-handed backhands, obviously).
Hope this was helpful - let me know any thoughts you have, including constructive criticism :)