It was quite interesting but not amazing
Well, to start off with, the plot doesn't make much sense.
Two metroids go into a cave, and then THEY'RE ATTACKED BY A METROID.
Why is an adult metroid going to attack child metroids?
And then after that it gets eaten by the queen.
THe backgrounds jump around a lot and don't really look too nice.
Other than that, I'm a big fan of metroid, and if you fix that stuff up I don't see why it couldn't be a good series.