Looks good to me, the spatter is a bit heavy so maybe you are a touch high in the wire speed. What shielding gas are you on? You might want to try it without the "backstepping" motion. Some MIG sets struggle with the rapid change in arc length you get when you move forward then back as the puddle is shallower at the front edge of the arc than it is at the rear where the build up weld deposit is.
I wish mine looked like that on my first attempt
looks good to me as well if you want a bit of challange put a piece in a vice stright up and weld that and see how diffferent it handles