not bad with a walmart racket (well, actually most graphite rackets perform quite similarly, despite what the racket companies trying to tell you).
can you take one from the side?
can't be 100% sure, but your toss is not forward enough into the court.... usually the left foot lands where the contact point is... yours landed right on the baseline lol.... should be 1-2 ft into the court.
this will allow you to put the weight into the shot.
overall pretty good slice serve.... you can develop a kick to open up both corners.