@Simo2784, aim to have the cut-out in the middle of the canvas - looks better in game.

Adding auto-contrast and/or brightness for washed out or dark images makes them look much for vibrant.

Keep an eye out for snow, as it is quite visible on a dark background in-game. Watch this video to see how you can easily spot it and clean it: 

Sometimes just putting it through remove.bg is also enough.