The actual critic on your new icon is: 
It is too much stuff on the picture, it looks clumsy and stuffed. The other problem with it is that in the small view on a smartphone you wont realy recognize the chess-figures in a good way. 

if you need further tipps for Launcher Icons u should read those guides:

https://developer.apple.com/ios/human-interface-guidelines/icons-and-images/app-icon/

https://material.io/guidelines/style/icons.html#icons-product-icons

they are pretty helpful :)

and consider working with a propper tool ;-)