I only got one star on this attack it is my first time using this attack maybe that's why? Does my army composition has a problem, should I have brought more wiz or valks or loons? Is it because I only have level 1 valks? Is it because I don't have my king during the attack? or because I did the funneling wrong?? Please elaborate and explain briefly all my mistakes so I can learn from it. Thanks. :)
Here is the video:
https://sendvid.com/0cxedxaz

