modify image / visual style

[stereo]

Could someone help me, please ?
I want to modify 4 images ( .png )
I want to edit them but i can't. All i need to do is to have the X, very straight, just like this X
Here are the files, attached.
If anyone could help me, i would really appreciate
Thank you

 

[swserg]

where do u what to change it?

 

[stereo]

I want to make a straight X , not crooked

 

[stereo]

Nobody can help me ?

 

[swserg]

i dont understand your question, sorry.

 

[stereo]

I want to have the sign " X " to look better