SC2Mapster

The problem is that the black parts have not been rendered as transparent/deleted and then saved to .dds format, so the black parts are overlaying the button UI.

I made an icon you can download here. I was unsure if you wanted the emissive layer on (the blue cracks and stuff), so I just left it off since typically I do so when I make my own icons.

For future reference, I would make requests like this in the Requests section of the Artist Tavern forum.