How to add alpha on .net file ?

[Guest]

Hi, I'm trying to make a rip on a widowmaker armor:

 

 

 

 



 
 

 

 

What I did so far is: 

-Open the file on  paint.net

-Select the area I want to cut out and hit delete

 

It does look like an "Alpha" ripped part, but when I get in game, the texture it shows is not the skin, but a strange dark red texture:

 

 



 

 

Even tho in the same file there's a part of the armor that has an Alpha (the back) and it show the skin correactly in the game.

 

What should I do?

[Guest]

anyone?