I can never tell much from a camera at that angle (good view of the pebbles on the court), so this may not be all that great an analysis.
Serve looks like 3.5 to 4.0 level. Form is decent, so it really should be better than it is - seems erratic and you are not getting out all the power that is in your stroke.
Groundstrokes look pretty decent and you are able to hit varying flavors of forehands and backhands. Spin and power could be up to 4.5 level, but you are pretty erratic in where the ball is going, so I'd say 4.0. However, maybe you would hit better against a real person than the wall. (nice backboard setup, by the way)
Really work on your footwork and making each stroke have as good as form as possible when working on the backboard. It is easy to just get into slapping the ball around since it is so repetitive. Remember, you are grooving whatever level of stroke you are hitting. You don't have to worry about an outcome against the wall - you will always lose to it. Emphasize form.